On Ulam’s type stability of the linear equation and related issues J Brzdęk, K Ciepliński, Z Leśniak Discrete Dynamics in Nature and Society 2014 (1), 536791, 2014 | 53 | 2014 |

Topological conjugacy of piecewise monotonic functions of nonmonotonicity height≥ 1 Z Leśniak, YG Shi Journal of Mathematical Analysis and Applications 423 (2), 1792-1803, 2015 | 16 | 2015 |

On approximate solutions of the generalized Volterra integral equation A Bahyrycz, J Brzdȩk, Z Leśniak Nonlinear Analysis: Real World Applications 20, 59-66, 2014 | 16 | 2014 |

On Ulam stability of functional equations in 2-normed spaces—A survey A Bahyrycz, J Brzdęk, ES El-Hady, Z Leśniak Symmetry 13 (11), 2200, 2021 | 13 | 2021 |

On fractional iterates of a homeomorphism of the plane Z Leśniak Annales Polonici Mathematici 79 (2), 129-137, 2002 | 13 | 2002 |

On conjugacy of r-modal interval maps with non-monotonicity height equal to 1 YG Shi, L Li, Z Leśniak Journal of Difference Equations and Applications 19 (4), 573-584, 2013 | 12 | 2013 |

On parallelizability of flows of free mappings Z Leśniak aequationes mathematicae 71, 280-287, 2006 | 12 | 2006 |

On fractional iterates of a Brouwer homeomorphism embeddable in a flow Z Leśniak Journal of mathematical analysis and applications 366 (1), 310-318, 2010 | 11 | 2010 |

On an equivalence relation for free mappings embeddeable in a flow Z Leśniak International Journal of Bifurcation and Chaos 13 (07), 1911-1915, 2003 | 11 | 2003 |

A note on solutions of a functional equation arising in a queuing model for a LAN gateway. J Brzdęk, E El-hady, W Förg-Rob, Z Leśniak Aequationes mathematicae 90 (4), 2016 | 9 | 2016 |

On homeomorphic and diffeomorphic solutions of the Abel equation on the plane Z Leśniak Annales Polonici Mathematici 58 (1), 7-18, 1993 | 9 | 1993 |

On the generalized Fréchet functional equation with constant coefficients and its stability J Brzdęk, Z Leśniak, R Malejki Aequationes mathematicae 92, 355-373, 2018 | 8 | 2018 |

On a decomposition of the plane for a flow of free mappings Z Lesniak Publicationes Mathematicae Debrecen 75 (1-2), 191-202, 2009 | 8 | 2009 |

On iteration groups of singularity-free homeomorphisms of the plane MC Zdun, Z Leśniak Annales Mathematicae Silesianae 8, 203-210, 1994 | 8 | 1994 |

Survey on recent Ulam stability results concerning derivations J Brzdęk, L Cădariu, K Ciepliński, A Fošner, Z Leśniak Journal of Function Spaces 2016 (1), 1235103, 2016 | 7 | 2016 |

On boundaries of parallelizable regions of flows of free mappings Z Leśniak Abstract and Applied Analysis 2007 (1), 031693, 2007 | 7 | 2007 |

Constructions of fractional iterates of Sperner homeomorphisms of the plane Z LeSniak Iteration Theory (Batschuns, 1992), 182-192, 1996 | 7 | 1996 |

On the stability of a generalized Fréchet functional equation with respect to hyperplanes in the parameter space J Brzdȩk, Z Leśniak, R Malejki Symmetry 13 (3), 384, 2021 | 6 | 2021 |

On the structure of Brouwer homeomorphisms embeddable in a flow Z Leśniak Abstract and Applied Analysis 2012 (1), 248413, 2012 | 6 | 2012 |

One class of planar rational involutions Z Leśniak, YG Shi Nonlinear Analysis: Theory, Methods & Applications 74 (17), 6097-6104, 2011 | 6 | 2011 |