• 1984-1989: Cybernetics Faculty, Kyiv State University (Ukraine), MA in Mathematics

• 1989-1993: Institute of Mathematics, National Academy of Sciences of Ukraine, PhD in Physics and Mathematics (under supervision of Prof. A. Sharkovsky and Prof. Yu. Maistrenko)

• 1993-present: Senior Scientific Researcher, Dept. of Differential Equations and Oscillation Theory,  Institute of Mathematics, National Academy of Sciences of Ukraine

• 2004-2005: Scientific Researcher, University of Urbino, Italy,  (Marie Curie Fellowship within the 6-th European Community Framework Programme)

• 2009-present: Visiting Professor at the Kyiv School of Economics (Economics Education and Research Consortium, Inc)

• V. Avrutin, L.Gardini, I. Sushko, F.Tramontana. Continuous and Discontinuous Piecewise-Smooth One-Dimensional Maps: Invariant Sets and Bifurcation structures. World Scientific, 2019.

• A. Panchuk, I. Sushko, E, Michetti, R. Coppier. Revealing bifurcation mechanisms in a 2D nonsmooth map by means of the first return map. Commun Nonlinear Sci Numer Simulat, Vol. 117, 106946 (2023); DOI: 10.1016/j.cnsns.2022.106946
• L. Gardini, D. Radi, N. Schmitt, I. Sushko, F. Westerhoff. Sentiment-driven business cycle dynamics: An elementary macroeconomic model with animal spirits. J. of Economic Behavior and Organization, Vol. 210, 342-359, DOI: 10.1016/j.jebo.2023.04.0120
• I. Sushko, V. Avrutin, L. Gardini. Lozi map embedded into the 2D border collision normal form, J of Difference Equations and Applications (2023), DOI: 10.1080/10236198.2023.2205960

• P. Commendatore, I. Kubin, I. Sushko. Big or small? A new economic geography model with an endogenous switch in the market structure, Chaos, Solitons & Fractals (2022), Vol. 161, 112257, DOI: 10.1016/j.chaos.2022.112257.
• L. Gardini, D. Radi, N. Schmitt, I. Sushko, F. Westerhoff (2022). Causes of fragile stock market stability, J. of Economic Behavior and Organization, Vol. 200, 483-498, DOI: 10.1016/j.jebo.2022.06.009
• J.S. Canovas, L. Gardini, F. Tramontana, A. Panchuk, I. Sushko. Preface to the special issue "nonlinear economic dynamics: A tribute to Tonu Puu", Chaos, Solitons & Fractals, Vol. 162, 112404 (2022) , DOI: 10.1016/j.chaos.2022.112404
• L. Gardini, D. Radi, N. Schmitt, I. Sushko, F. Westerhoff (2022). Perception of fundamental values and financial market dynamics: Mathematical insights from a 2D piecewise linear map, SIAM Journal on Applied Dynamical Systems, Vol. 21, Issue 4, 2314-2337; DOI: 10.1137/21m1456339
• L. Gardini, D. Radi, N. Schmitt, I. Sushko, F. Westerhoff (2022). Currency manipulation and currency wars: Analyzing the dynamics of competitive central bank interventions. J. of Economic Dynamics and Control, Vol. 145, 104545; DOI: 10.1016/j.jedc.2022.104545

• P. Commendatore, I. Kubin, I. Sushko. Obtaining a hub position: A New Economic Geography analysis of industry location and trade network structures, Metroeconomica 2021, 72, 148-172, DOI: 10.1111/meca.12314
• L. Gardini, I. Sushko, F. Tramontana. Dynamics of a two-dimensional map on nested circles and rings, Chaos, Solitons & Fractals 143 (2021), DOI: 10.1016/j.chaos.2020.110553
• M. Gallegati, L. Gardini, I. Sushko. Dynamics of a business cycle model with two types of governmental expenditures: the role of border collision bifurcations. Decisions in Economics and Finance (2021); DOI: 10.1007/s10203-021-00333-y
• L. Gardini, N. Schmitt, I. Sushko, F. Tramontana, F. Westerhoff. Necessary and sufficient conditions for the roots of a cubic polynomial and bifurcations of codimension-1, -2, -3 for 3D maps, Journal of Difference Equations and Applications (2021); DOI: 10.1080/10236198.2021.1920937
• V. Avrutin, A. Panchuk, I. Sushko. Border collision bifurcations of chaotic attractors in 1D maps with multiple discontinuities. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences (2021); DOI: 10.1098/rspa.2021.0432
• L. Gardini, I. Sushko. Preface: Special Issue on Nonlinear Dynamical Systems in Economic Modelling. Discrete and Continuous Dynamical Systems, Series B, Vol. 26, No. 11 (2021), i-iv, DOI: 10.3934/dcdsb.2021241
• I. Sushko, V. Avrutin, L. Gardini. Center bifurcation in the Lozi map, Int. J. Bifurcation and Chaos, Vol. 31, No. 16, 2130046, DOI: 10.1142/S0218127421300469.

• P. Commendatore, I. Kubin, I. Sushko. A propos Brexit: On the breaking up of integration areas -- a NEG analysis, Spatial Economic Analysis (2020); DOI: 10.1080/17421772.2019.1701702
• I. Sushko, P. Commendatore, I. Kubin. Codimension-two border collision bifurcation in a two-class growth model with optimal saving and switch in behavior, Nonlinear Dynamics (2020); DOI: 10.1007/s11071-020-05782-5.

• L.Gardini, V. Manosa, I. Sushko. A route to chaos in the Boros-Moll map. International Journal of Bifurcation and Chaos 2019, Vol 29, Issue 4, 1930009. DOI:10.1142/S021812741930009X
• L. Gardini, I. Sushko. Growing through chaos in the Matsuyama map via subcritical flip and bistability. Chaos, Solitons & Fractals 2019, Vol 124, 52-67. DOI:10.1016/j.chaos.2019.04.036
• I. Sushko, L. Gardini, K. Matsuyama. Dynamics of a generalized fashion cycle model. Chaos, Solitons & Fractals 2019, Vol. 126, 135-147.
• L. Gardini, I. Sushko. Bifurcations in smooth and piecewise smooth noninvertible maps. In: S. Elaydi, C. Pötzsche, A. Luminita (eds.), Recent Progress in Difference Equations, Discrete Dynamical Systems and Applications. Springer Proceedings in Mathematics and Statistics, 2019.

• P. Commendatore, I. Kubin, I. Sushko. The dynamics of a three-region linear NEG model. Communications in Nonlinear Science and Numerical Simulation 2018, Vol 58, 303-327. DOI:10.1016/j.cnsns.2017.04.006.
• I. Sushko, L. Gardini, K. Matsuyama. Globalization and Coupled Chaotic Fluctuations of Innovation. Communications in Nonlinear Science and Numerical Simulation 2018, Vol 58, 287-302.  DOI:10.1016/j.cnsns.2017.06.020
• L. Gardini, R. Makrooni, I. Sushko. Cascades of alternating smooth bifurcations and border bollision bifurcations with singularity in a family of discontinuous linear-power maps. Discrete and Continuous Dynamical Systems, Series B 2018, Vol 23, Issue 2, 701-729. DOI:10.3934/dcdsb.2018039
• L. Gardini, I. Sushko, K. Matsuyama. 2D discontinuous piecewise linear map: Emergence of fashion cycles. CHAOS 2018, Vol 28, 055917. DOI:10.1063/1.5018588
• A. Panchuk, I. Sushko, F. Westerhoff. A market model with two discontinuities: bifurcation structures in chaotic domain. CHAOS 2018, Vol 28, 05. DOI:10.1063/1.5024382
• K. Matsuyama, I. Sushko, L. Gardini. A piecewise linear model of credit traps and credit cycles: a complete characterization. Decisions in Economics and Finance 2018, Vol 41, Issue 2, 119-143. DOI:10.1007/s10203-018-0220-5
• P. Commendatore, I. Kubin, I. Sushko. Emerging trade patterns in a 3-region linear NEG model: three examples. In: P. Commendatore et al. (eds.), The Economy as a Complex spatial System. Springer Proceedings in Complexity. DOI:10.1007/978-3-319-65627-4 3, 38-80

• A. Panchuk, I. Sushko, V. Avrutin. Bifurcation structures in a bimodal piecewise linear map. Frontiers in Applied Mathematics and Statistics May 2017, Vol 3, Article 7, DOI: 10.3389/fams.2017.00007.
• E. Ekaterinchuk, J. Jungeilges, T. Ryazanova, I.Sushko. Dynamics of a minimal consumer network with uni-directional influence. Journal of Evolutionary Economics 2017, Vol 27, Issue 5, 831-857, DOI: 10.1007/s00191-017-0517-5.
• P. Commendatore, I. Kubin, P. Mossay, I. Sushko. The role of centrality and market size in a 4-region asymmetric new economic geography model. Journal of Evolutionary Economics 2017, Vol 27, Issue 5, 1095-1131, DOI:10.1007/s00191-017-0540-6.
• E. Ekaterinchuk, J. Jungeilges, T. Ryazanova, I.Sushko. Dynamics of a minimal consumer network with bi-directional influence. Communications in Nonlinear Science and Numerical Simulation, 2017, https://doi.org/10.1016/j.cnsns.2017.04.007.
• G.-I. Bischi, L. Gardini, I. Sushko. Periodicity induced by production constraints in Cournot duopoly models with unimodal reaction curves. In: Essays in Honour of Ferenc Szidarovszky, Springer, 2017, 73-93.

• K. Matsuyama, I. Sushko, L. Gardini. Revisiting the Model of Credit Cycles with Good and Bad Projects. Journal of Economic Theory 163 (2016) 525--556.
• I. Sushko, L. Gardini, K. Matsuyama. Robust chaos in a credit cycle model defined by a one-dimensional piecewise smooth map. Chaos, Solitons & Fractals, 91 (2016) 299--309.
• I. Sushko, L. Gardini, V. Avrutin. Nonsmooth One-dimensional Maps: Some Basic Concepts and Definitions. Journal of Difference Equations and Applications (2016) DOI: 10.1080/10236198.2016.1248426.
• V. Avrutin, Zh. Zhusubaliyev, A. Saha, S. Banerjee, I. Sushko and L. Gardini. Dangerous bifurcations revisited. Int. J. Bifurcation and Chaos, Vol. 26, No. 14 (2016) 1630040 (24 pages).
• P. Commendatore, I. Kubin, I. Sushko. Trade agreements in a linear FE model. In: Dynamic Approaches to Global Economic Challenges, B. Bednar-Friedl, J. Kleinert (Eds.), Springer International Publishing Switzerland 2016 , DOI 10.1007/978-3-319-23324-6_3.
• I. Kubin, P. Commendatore, I. Sushko. Some dynamical models in regional economics: Economic structure and analytic tools. In: Qualitative Theory of Dynamical Systems, Tools and Applications for Economic Modelling, G.-I. Bischi, A. Panchuk, D. Radi (Ed.s), Springer Proceedings in Complexity, Springer 2016.

• I. Sushko, V. Avrutin, L. Gardini. Bifurcation structure in the skew tent map and its application as a border collision normal form. Journal of Difference Equations and Applications (2015) DOI: 10.1080/10236198.2015.1113273.
• R. Makrooni, L. Gardini, I. Sushko. Bifurcation structures in a family of 1D discontinuous linear-hyperbolic invertible maps. Int. J. Bifurcation and Chaos, Vol. 25, No. 13 (2015) 1530039 (21 pages).
• P. Commendatore, I. Kubin, P. Mossay, I. Sushko. Dynamic agglomeration patterns in a two-country NEG model with four regions. Chaos, Solitons & Fractals, 79 (2015) 2--17.
• P. Commendatore, I. Kubin, I. Sushko. Typical Bifurcation Scenario in a Three Region Symmetric New Economic Geography Model. Mathematics and Computers in Simulation, 108 (2015) 63.80, http:// dx.doi.org/10.1016/j.matcom.2014.01.004.
• F. Tramontana, I. Sushko, V. Avrutin. Period adding structure in a 2D discontinuous model of economic growth. Applied Mathematics and Computation, 253 (2015) 262.273.
• A. Panchuk, I. Sushko, V. Avrutin. Bifurcation structures in a bimodal piecewise linear map: chaotic dynamics. Int. J. Bifurcation and Chaos, (2015), doi: 10.1016/j.chaos.2015.03.013.
• I. Sushko, F. Tramontana, F. Westerhoff, V. Avrutin. Symmetry breaking in a bull and bear financial market model. Chaos, Solitons & Fractals 79 (2015) 57--72.

• C. Petraglia, P. Commendatore, I. Kubin, I. Sushko. Regional integration, international liberalisation and the dynamics of industrial agglomeration. Journal of Economic Dynamics and Control 48 (2014) 265.287, http://dx.doi.org/10.1016/j.jedc.2014.07.011.
• V. Avrutin, L. Gardini, M. Schanz, I. Sushko. Bifurcations of Chaotic Attractors in One-Dimensional Maps, Int. J. Bifurcation and Chaos. Vol. 24, No. 8 (2014) 1440012 (10 pages).
• V. Avrutin, I. Sushko, F. Tramontana. Bifurcation structure in a bimodal piecewise linear business cycle model. Abstract and Applied Analysis, Volume 2014, Article ID 401319, 12 pages, http://dx.doi.org/10.1155/2014/401319.
• L. Gardini, V. Avrutin, I. Sushko. Codimension-2 border collision bifurcations in one-dimensional discontinuous piecewise smooth maps. Int. J. Bifurcation and Chaos, Vol. 24, No. 2 (2014) 1450024 (30 pages).
• I. Sushko, L. Gardini, K. Matsuyama. Superstable Credit Cycles and U-sequence. Chaos, Solitons & Fractals, Vol. 59 (2014) 13.27.
• P. Commendatore, A. Pinto, I. Sushko. A simple post-Keynesian model of growth with a .nancial constraint on investment. Structural Change and Economic Dynamics, Vol. 28 (2014) 12-24.
• V. Avrutin, I. Sushko, L. Gardini. Cyclicity of chaotic attractors in one-dimensional discontinuous maps. Mathematics and Computers in Simulation, 95 (2014) 126.136.

• A. Panchuk, I. Sushko, B. Schenke, V. Avrutin. Bifurcation Structure in Bimodal Piecewise Linear Map. Int. J. Bifurcation and Chaos, Vol. 23, No. 12 (2013).

• G.-I. Bischi, F. Lamantia and I. Sushko. Border Collision Bifurcations in a simple oligopoly model with production constraints. Int. J. Appl. Math. and Statistics, Vol. 26, No. 2 (2012), 121-135.

• L. Gardini, I. Sushko, V. Avrutin, M. Schanz. Critical homoclinic orbits lead to snap-back repellers, Chaos, Solitons & Fractals, 44 (2011) 433-449.

• L. Gardini, F. Tramontana, I. Sushko. Border Collision Bifurcations in one-dimensional linear-hyperbolic maps, Mathematics and Computers in Simulation, Vol. 81, Issue 4 (2010), 899-914.
• S. Brianzoni, E. Michetti, I. Sushko. Border Collision Bifurcations of Superstable Cycles in a One-Dimensional Piecewise Smooth Map. Mathematics and Computers in Simulation, 81 (2010), 52-61.
• I. Sushko and L. Gardini. Degenerate Bifurcations and Border Collisions in Piecewise Smooth 1D and 2D Maps. Int. J. Bifurcation and Chaos, Vol 20, No. 7 (2010), 2045-2070.
• I. Sushko, L. Gardini and T. Puu. Regular and Chaotic Growth in a Hicksian Floor/Ceiling Model. Journal of Economic Behaviour and Organization, 75 (2010), 77-94.

• L. Gardini and I. Sushko. Center Bifurcation of a point on the Poincaré Equator. Proc. of ECIT 2008, Grazer Math. Ber. No. 354 (2009), 254-279.
• I. Sushko and L. Gardini. Degenerate bifurcations in one- and two-dimensional piecewise smooth maps. Proc. of NOMA 2009, 1-4.
• I. Sushko, M. Wegener, F. Westerhoff, and G. Zaklan. Endogenous business cycle dynamics within the inventory model of Metzler: Adding an inventory floor. Nonlinear Dynamics, Psychology and Life Sciences, Vol. 13, No. 2 (2009), 225-235.

• L. Gardini, I. Sushko and A. Naimzada. Growing Through Chaotic Intervals. Journal of Economic Theory 143 (2008), 541-557.
• I. Sushko and L. Gardini. Center Bifurcation for Two-Dimensional Border-Collision Normal Form, Int. J. Bifurcation and Chaos, Vol. 18, Issue 4 (2008), 1029-1050.

• I. Sushko, T. Puu and L. Gardini. Chapter 12. A Goodwin-type Model with Cubic Investment Function. In: Business Cycles Dynamics. Models and Tools (T. Puu and I.Sushko Ed.s), Springer, 2006.
• L. Gardini, T. Puu and I. Sushko. A Goodwin-type Model with a Piecewise Linear Investment Function. In: Business Cycles Dynamics. Models and Tools (T. Puu and I.Sushko Ed.s), Springer, 2006.
• L. Gardini, T. Puu and I. Sushko. The Hicksian Model with Investment Floor and Income Ceiling. In: Business Cycles Dynamics. Models and Tools (T. Puu and I.Sushko Ed.s), Springer, 2006.
• I. Sushko and L. Gardini. Center Bifurcation for a Two-Dimensio- nal Piecewise Linear Map. In: Business Cycles Dynamics. Models and Tools (T. Puu and I.Sushko Ed.s), Springer, 2006.
• I. Sushko, A. Agliari and L. Gardini. Bifurcation Structure of Parameter Plane for a Family of Unimodal Piecewise Smooth Maps: Border-Collision Bifurcation Curves. In: Dynamic Modelling in Economics and Finance in honour of Professor Carl Chiarella (G.I. Bischi and I. Sushko Ed.s), Chaos, Solitons & Fractals, Vol. 29, Issue 3 (2006), 756-770.
• T. Puu, L. Gardini and I. Sushko. On the Change of Periodicities in the Hicksian Multiplier-Accelerator Model with a Consumption Floor. In: Dynamic Modelling in Economics and Finance in honour of Professor Carl Chiarella (G.I. Bischi and I. Sushko Ed.s), Chaos, Solitons & Fractals, Vol. 29, Issue 3 (2006), 681-696.
• G.-I. Bischi and I. Sushko. Foreword "Dynamic Modelling in Economics and Finance" in honour of Professor Carl Chiarella, Chaos, Solitons & Fractals, Vol. 29, Issue 3 (2006), 515-516.

• I. Sushko, A. Agliari and L. Gardini. Bistability and Border-Collision Bifurcations for a Family of Unimodal Piecewise Smooth Maps. Discrete and Continuous Dynamical Systems, Series B (2005), Vol. 5, N 3, 881-897.
• T. Puu, L. Gardini and I. Sushko. A Hicksian Multiplier-Accelerator Model with Floor Determined by Capital Stock, Journal of Economic Behaviour and Organization, Vol. 56 (2005), 331-348.

• G. Kristensen and I. Sushko. Complex Market Dynamics under Box-Cox Monopoly, Chaos, Solitons & Fractals 21 (2004), 591-602.
• I. Sushko, L. Gardini and T. Puu. Tongues of Periodicity in a Family of Two-dimensional Discontinuous Maps of Real Möbius Type, Chaos, Solitons & Fractals 21 (2004), 403-412.
• T. Puu, I. Sushko. A Business Cycle Model with Cubic Nonlinearity, Chaos, Solitons & Fractals, Vol. 19, (2004), 597-612.

• M. Gallegati, L. Gardini, T. Puu and I. Sushko. Hicks' Trade Cycle Revisited: Cycles and Bifurcations, Mathematics and Computers in Simulation, 63 (2003). 505-527.
• I. Sushko, T. Puu and L. Gardini. The Hicksian Floor-Roof Model for two Regions Linked by Interregional Trade. Chaos, Solitons & Fractals, Vol.18, No.3 (2003), 593-612.
• G. Kristensen, S. Yanchuk and I. Sushko. Dynamical Approach to Complex Regional Economic Growth based on Keynesian Model for China. Chaos, Solitons & Fractals, Vol.18, No.5 (2003), 937-952.
• E. Neumann, I. Sushko, Yu. Maistrenko, U. Feudel. Synchronization and desynchronization under the influence of quasiperiodic forcing. Physical Review E 67, 026202, 2003.

• I. Sushko, L. Gardini and T. Puu. Duopoly with Piecewise Linear Discontinuous Reaction Functions. In: Oligopoly and Complex Dynamics: Models and Tools, T. Puu and I. Sushko (Ed.s), Springer, 2002.
• T. Puu, L. Gardini and I. Sushko. Cournot Duopoly with Kinked Linear Demand According to Palander and Wald. In: Oligopoly and Complex Dynamics: Models and Tools, T. Puu and I. Sushko (Ed.s), Springer, 2002.

• I. Sushko, Y.Maistrenko and L.Gardini. On chaotic attractors at the transition from homeomorphism to endomorphism in a family of two-dimensional maps. Grazer Math. Ber., Nr. 339 (1999), 335-346.

• Yu. Maistrenko, I.Sushko and L.Gardini. About Two Mechanisms of Reunion of Chaotic Attractors, Chaos, Solitons & Fractals, Vol.9, No.8, (1998), 1373-1390.

• Yu.L. Maistrenko and I.M. Sushko. Bifurcation phenomena for two-dimensional piecewise linear maps, J. Tech. Phys., Vol. 37, No. 3-4 (1996), 371-378.
• Ch.Mira, Ch. Rauzy, Yu.L.Maistrenko, & I.M.Sushko. Some properties of a two-dimensional piecewise-linear noninvertible map, Int. J. Bifurcation and Chaos, Vol. 6, No. 12A (1996), 2299-2319.

• Yu. Maistrenko, I.Sushko. Bifurcation phenomena in autooscillation systems with delay leading to two-dimensional piecewise linear maps. Proceeding NDES 95, Dublin, 1995.

• Yu.L.Maistrenko, V.L.Maistrenko, I.M.Sushko. Order for the appearance of attractors in piecewise linear systems. In a book: Chaos and Nonlinear Mechanics, Series B, vol. 7, World Scientific, 1994.
• Yu.L.Maistrenko, V.L.Maistrenko, I.M.Sushko. Bifurcation phenomena in generators with delay lines. J. "Radioengineering and electronics", Moscow, No. 8-9, 1994, 1367-1380.
• Yu.L.Maistrenko, V.L.Maistrenko, I.M.Sushko. Period adding phenomenon in piecewise linear endomorphisms arising from electronic systems. Proc. of the Workshop NDES-94, Krakow, Poland, 1994, 39-44.
• V.L.Maistrenko, Yu.L.Maistrenko, I.M.Sushko. Noninvertible two-dimen- sional maps arising in radiophysics. Int. J. "Bifurcation and Chaos", Vol. 4, No. 2 (1994) 383-400.

• I.M.Sushko. Thesis "Stability and bifurcations of solutions of the families of difference equations with two deviations of argument". Institute of Mathematics of the Academy of Sciences of Ukraine, 1993, 76 p.

• Yu.L.Maistrenko, V.L.Maistrenko, I.M.Sushko. Attractors of piecewise linear maps of straight line and plane. Preprint of the Institute of Mathematics of the Academy of Sciences of Ukraine, 1992, 55 p.
• V.L.Maistrenko, Yu.L.Maistrenko, I.M.Sushko. On one noninvertible plane map arising in radiophysics. Preprint of the Institute of Mathematics of the Academy of Science of Ukraine, 1992, 33 p.