Existence of extremal periodic solutions for quasilinear parabolic equations

by Siegfried Carl
Published 1997-01-01

Sign-Changing Solutions for Nonlinear Elliptic Problems Depending on Parameters

by Siegfried Carl, Dumitru Motreanu
Published 2010-01-01

Sign-changing and multiple solutions for the p-Laplacian

by Siegfried Carl, Kanishka Perera
Published 2002-01-01

Existence of solutions for discontinuous functional equations and elliptic boundary-value problems

by Siegfried Carl, Seppo Heikkila
Published 2002-06-01

Nonsmooth and nonlocal differential equations in lattice-ordered Banach spaces

by S. Heikkilä, Siegfried Carl
Published 2005-06-01

Existence and comparison results for quasilinear evolution hemivariational inequalities

by Siegfried Carl, Vy K. Le, Dumitru Motreanu
Published 2004-04-01