On the existence of stable asymmetric limit cycles and chaos in unforced symmetric relay feedback systems. - Piotr Kowalczyk; Mario di Bernardo (ECC, 2001)

On a Novel Class of Bifurcations in Hybrid Dynamical Systems. - Piotr Kowalczyk; Mario di Bernardo (HSCC, 2001)

Numerical Analysis of Horvath-Kawazoe Equation. - Piotr Kowalczyk; Artur P. Terzyk; Piotr A. Gauden; Lech Solarz (Comput. Chem., 2002)

Sliding bifurcations: a Novel Mechanism for the Sudden Onset of Chaos in dry Friction oscillators. - Mario di Bernardo; Piotr Kowalczyk; Arne B. Nordmark (Int. J. Bifurc. Chaos, 2003)

Two-Parameter Discontinuity-Induced bifurcations of Limit Cycles: Classification and Open Problems. - Piotr Kowalczyk; Mario di Bernardo; Alan R. Champneys; Stephen John Hogan; Martin E. Homer; Petri T. Piiroinen; Yuri A. Kuznetsov; Arne B. Nordmark (Int. J. Bifurc. Chaos, 2006)

Complex Dynamics in a Hysteretic Relay Feedback System with Delay. - Alessandro Colombo; Mario di Bernardo; Stephen John Hogan; Piotr Kowalczyk (J. Nonlinear Sci., 2007)

Diffusion Limits for Discrete Velocity Models in a Thin Gap. - Hans Babovsky; Piotr Kowalczyk (Multiscale Model. Simul., 2007)

Fast numerical method for the Boltzmann equation on non-uniform grids. - Alexei Heintz; Piotr Kowalczyk; Richards Grzhibovskis (J. Comput. Phys., 2008)

Bifurcations in Nonsmooth Dynamical Systems. - Mario di Bernardo; Chris J. Budd; Alan R. Champneys; Piotr Kowalczyk; Arne B. Nordmark; Gerard Olivar Tost; Petri T. Piiroinen (SIAM Rev., 2008)

Fast Numerical Method for 2D Initial-Boundary Value Problems for the Boltzmann Equation. - Alexei Heintz; Piotr Kowalczyk (PPAM (2), 2013)

Convergence analysis for Backward-Euler and mixed discontinuous Galerkin methods for the Vlasov-Poisson system. - Mohammad Asadzadeh; Piotr Kowalczyk (Adv. Comput. Math., 2015)

Complexity and dynamics of switched human balance control during quiet standing. - Salam Nema; Piotr Kowalczyk; Ian Loram (Biol. Cybern., 2015)

Complex Root Finding Algorithm Based on Delaunay Triangulation. - Piotr Kowalczyk (ACM Trans. Math. Softw., 2015)

Wink Detection on the Eye Image as a Control Tool in Multimodal Interaction. - Piotr Kowalczyk; Dariusz J. Sawicki (ICIAP (2), 2017)

On root finding algorithms for complex functions with branch cuts. - Piotr Kowalczyk (J. Comput. Appl. Math., 2017)

GRPF: Global Complex Roots and Poles Finding Algorithm Based on Phase Analysis. - Piotr Kowalczyk (CoRR, 2018)

Head Movement Based Interaction in Mobility. - Dariusz J. Sawicki; Piotr Kowalczyk (Int. J. Hum. Comput. Interact., 2018)

Blink and wink detection as a control tool in multimodal interaction. - Piotr Kowalczyk; Dariusz J. Sawicki (Multim. Tools Appl., 2019)

Global Complex Roots and Poles Finding Algorithm in C × R Domain. - Sebastian Dziedziewicz; Malgorzata Warecka; Rafal Lech; Piotr Kowalczyk (IEEE Access, 2023)

Numerical Test for Stability Evaluation of Analog Circuits. - Tomasz P. Stefanski; Piotr Kowalczyk; Jacek Gulgowski (MIXDES, 2024)

Numerical Method for Stability Testing of Fractional Exponential Delay Systems. - Tomasz P. Stefanski; Sebastian Dziedziewicz; Piotr Kowalczyk; Jacek Gulgowski (MMAR, 2024)