Integrability, center, and cyclicity problems for planar analytical vector fields
Integrability of two-dimensional polynomial differential systems
Bifurcations of nested invariant tori and invariant sets of Lotka-Volterra differe...
Laplace transformations and Darboux integrability of systems of hydrodynamic type
Global analysis of polynomial differential systems defined on the space R3
Qualitative theory of ordinary differential equations: integrability, periodic orb...