| Publication | Date of Publication | Type |
|---|
| Qualitative Theory of ODEs | 2022-04-04 | Paper |
| Qualitative Analysis of Some Libration Points in the Restricted Four-body Problem | 2022-03-28 | Paper |
| A Note on the Commutator of Hamiltonian Vector Fields | 2021-11-12 | Paper |
| Analytic properties of the complete formal normal form for the Bogdanov–Takens singularity * | 2021-06-18 | Paper |
| Melnikov functions in the rigid body dynamics | 2020-06-29 | Paper |
| A note on the Jacobian Conjecture | 2020-04-10 | Paper |
| Perturbations of the Hess-Appelrot and the Lagrange cases in the rigid body dynamics | 2019-06-19 | Paper |
| First order linear differential equations with involutive delay and hypergeometric functions | 2019-02-26 | Paper |
| The Poncelet Theorems in Interpretation of Rafaɫ Koɫodziej | 2018-11-28 | Paper |
| The Hess-Appelrot system. III: Splitting of separatrices and chaos | 2018-08-16 | Paper |
| The CD45 Case Revisited | 2017-06-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2801871 | 2016-04-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3464829 | 2016-01-27 | Paper |
| Melnikov functions in quadratic perturbations of generalized Lotka-Volterra systems | 2015-10-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2944151 | 2015-09-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2944703 | 2015-09-07 | Paper |
| Painlevé equations, elliptic integrals and elementary functions | 2015-02-04 | Paper |
| Birkhoff normalization, bifurcations of Hamiltonian systems and the deprits formula | 2014-01-29 | Paper |
| Solutions to some singular nonlinear boundary value problems | 2013-11-11 | Paper |
| Linear differential equations and multiple zeta-values. III. Zeta(3) | 2013-10-16 | Paper |
| The Hess-Appelrot system. I. Invariant torus and its normal hyperbolicity | 2013-05-28 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2894638 | 2012-06-30 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2894669 | 2012-06-30 | Paper |
| Number of singular points of an annulus in \(\mathbb C^{2}\) | 2012-03-28 | Paper |
| A simple proof of the non-integrability of the first and the second Painlevé equations | 2012-01-13 | Paper |
| The Hess-Appelrot system. II: Perturbation and limit cycles | 2011-12-14 | Paper |
| Divergence of the reduction to the multidimensional nilpotent Takens normal form | 2011-12-08 | Paper |
| Linear differential equations and multiple zeta values. II: A generalization of the WKB method | 2011-07-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3011991 | 2011-06-29 | Paper |
| The Poincaré center problem | 2011-01-22 | Paper |
| Linear differential equations and multiple zeta values. I. Zeta(2) | 2011-01-11 | Paper |
| Complex algebraic plane curves via Poincaré-Hopf formula. II: Annuli | 2010-09-21 | Paper |
| INVARIANT TORUS IN 3D LOTKA–VOLTERRA SYSTEMS: THE NONDEGENERACY CONDITION | 2010-09-01 | Paper |
| The restricted three body problem revisited | 2010-03-29 | Paper |
| Classification of diffeomorphisms of \(\mathbb{S}^4\) induced by quaternionic Riccati equations with periodic coefficients | 2009-11-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3645666 | 2009-11-18 | Paper |
| An application of Newton-Puiseux charts to the Jacobian problem | 2009-08-20 | Paper |
| LIMIT CYCLES IN 3D LOTKA–VOLTERRA SYSTEMS APPEARING AFTER PERTURBATION OF HOPF CENTER | 2009-07-21 | Paper |
| Complex algebraic plane curves via Poincaré-Hopf formula. III: Codimension bounds | 2009-06-23 | Paper |
| Multidimensional formal Takens normal form | 2009-01-22 | Paper |
| Complex algebraic plane curves via the Poincaré-Hopf formula. I. Parametric lines | 2008-11-14 | Paper |
| Small amplitude limit cycles for the polynomial Liénard system | 2008-11-06 | Paper |
| Geometry of Puiseux expansions | 2008-05-05 | Paper |
| A note on higher order Melnikov functions | 2008-02-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5421220 | 2007-10-22 | Paper |
| Complex algebraic curves. Annuli | 2007-08-13 | Paper |
| Invariant algebraic curves for the cubic Liénard system with linear damping | 2006-08-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3374875 | 2006-02-27 | Paper |
| The three-dimensional generalized Lotka–Volterra systems | 2005-07-27 | Paper |
| Limit cycles of three-dimensional polynomial vector fields | 2005-03-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4812855 | 2004-08-23 | Paper |
| A remark about homogeneous polynomial maps | 2003-12-01 | Paper |
| A new topological proof of the Abhyankar-Moh theorem | 2003-09-21 | Paper |
| Polynomial Riccati equations with algebraic solutions | 2003-09-09 | Paper |
| Orbital formal normal forms for general Bogdanov-Takens singularity. | 2003-09-04 | Paper |
| Limit cycles for multidimensional vector fields. The elliptic case | 2003-06-09 | Paper |
| Multi-dimensional Jouanolou system | 2003-04-27 | Paper |
| Periodic planar systems without periodic solutions | 2003-04-04 | Paper |
| The analytic and formal normal form for the nilpotent singularity | 2003-02-04 | Paper |
| Two remarks about Picard-Vessiot extensions and elementary functions | 2003-01-16 | Paper |
| Note on the deck transformations group and the monodromy group | 2002-12-09 | Paper |
| The Pascal theorem and some its generalizations | 2002-12-08 | Paper |
| Limit cycles appearing after perturbation of certain multidimensional vector fields. | 2002-10-15 | Paper |
| Asymptotic properties of Abelian integrals arising in quadratic systems | 2002-03-18 | Paper |
| The topological proof of Abel-Ruffini theorem | 2002-01-16 | Paper |
| The method of holomorphic foliations in planar periodic systems: The case of Riccati equations | 2001-10-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2736252 | 2001-08-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4516944 | 2000-11-20 | Paper |
| The extended monodromy group and Liouvillian first integrals | 2000-04-13 | Paper |
| Cyclicity of graphics with semi-hyperbolic points inside quadratic systems | 2000-04-13 | Paper |
| New examples of holomorphic foliations without algebraic leaves | 1999-05-31 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4222616 | 1999-05-18 | Paper |
| The centre conditions for a certain cubic system | 1998-11-15 | Paper |
| Remarks on ``The classification of reversible cubic systems with center | 1998-04-22 | Paper |
| Algebraic invariant curves for the Liénard equation | 1998-03-24 | Paper |
| The problem of center for resonant singular points of polynomial vector fields | 1997-09-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4863287 | 1996-11-26 | Paper |
| On cyclicity of triangles and segments in quadratic systems | 1996-07-09 | Paper |
| On a certain generalization of Bautin's theorem | 1996-05-30 | Paper |
| Eleven small limit cycles in a cubic vector field | 1995-10-22 | Paper |
| On algebraic solutions of algebraic Pfaff equations | 1995-07-18 | Paper |
| The classification of reversible cubic systems with center | 1995-03-13 | Paper |
| On first integrals for polynomial differential equations on the line | 1995-02-01 | Paper |
| Quadratic systems with center and their perturbations | 1994-10-13 | Paper |
| Abelian integrals in non-symmetric perturbation of symmetric Hamiltonian vector field | 1994-07-03 | Paper |
| Bifurcations of planar vector fields. Nilpotent singularities and Abelian integrals | 1992-09-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3990341 | 1992-06-28 | Paper |
| Zeroes of complete elliptic integrals for 1:2 resonance | 1992-06-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5758506 | 1990-01-01 | Paper |
| On relations between additive and multiplacative clustering operators | 1988-01-01 | Paper |
| Bifurcations of certain family of planar vector fields tangent to axes | 1987-01-01 | Paper |
| One-dimensional random walk with self-interaction | 1987-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3740685 | 1986-01-01 | Paper |
| Bifurcations of a family of vector fields on the plane that touch the coordinate axes | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3766520 | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3774393 | 1986-01-01 | Paper |
| ON THE VERSALITY OF A FAMILY OF SYMMETRIC VECTOR FIELDS IN THE PLANE | 1984-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3664089 | 1983-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4155517 | 1978-01-01 | Paper |
