Includes bibliographical references.

H�older estimates of solutions to initial-boundary value problems for parabolic equations of nondivergent form with Wentzel boundary condition;Reverse H�older inequalities with boundary integrals and _p estimates for solutions of nonlinear elliptic and parabolic boundary-value problems;Quasilinear parabolic equations with small parameter in a Hilbert space;On the stability of solitary waves for nonlinear Schr�odinger equations;On semigroups generated by initial-boundary value problems describing two-dimensional visco-plastic flows;Elliptic differential inequalities, embedding theorems, and variational problems;Long time behavior of flows moving by mean curvature;Bifurcation problem for nonlinear second order equations in variable regions;Existence of a weak solution of the minimax problem arising in Coulomb-Mohr plasticity