On a criterion of uniqueness for periodic solutions of linear second order difference equations
On the existence and uniqueness of periodic solutions for difference equations of second order
Linear problems for systems of difference equations
The boundary value problems for ordinary non-linear differential and difference equations of the fourth order
An example of a continuous function without the usual, the approximative and the distributional derivative
On the existence and uniqueness of solutions of some partial differential functional equations
Sensitivity of optimal solutions to control problems for systems described by hemivariational inequalities
Optimal control for a class of mechanical thermoviscoelastic frictional contact problems
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