The Weinstein Conjecture in P X Cl.
Three periodic solutions for an ordinary differential inclusion with two parameters
Applying a nonsmooth version of a three critical points theorem of Ricceri, we prove the existence of three periodic solutions for an ordinary differential inclusion depending on two parameters.
Three periodic solutions to an eigenvalue problem for a class of second-order Hamiltonian systems.
To existence of the periodic solution of a third-order nonlinear differential equation
Topologická klasifikácia diferenciálnych rovníc a štrukturálna stabilita
Travelling wave solutions for the Painlevé-integrable coupled KdV equations.
Two classical periodic problems on time scales.
Two-sided approximation to periodic solutions of ordinary differential equations.
Tеоремы существования неотрицательных периодических решений конечных и счетных систем дифференциальных уравнений и теорема существования решений счетных систем дифференциальных уравнений