Optimal Control in Matrix-Valued Coefficients for Nonlinear Monotone Problems: Optimality Conditions I (2015) Kogut PI, Kupenko OP, Leugering G Journal article Optimal Control in Matrix-Valued Coefficients for Nonlinear Monotone Problems: Optimality Conditions II (2015) Kogut PI, Kupenko OP, Leugering G Journal article Matrix-Valued L1-Optimal Controls in the Coefficients of linear elliptic problems (2013) Kogut PI, Leugering G Journal article, Original article Optimal L1-Control in Coefficients for Dirichlet Elliptic Problems: H-Optimal Solutions (2012) Kogut PI, Leugering G Journal article, Original article Trace operators in Besov and Triebel-Lizorkin spaces (2010) Schneider C Journal article, Original article Unilateral contact problems for two perpendicular elastic structures (2008) Khuldnev A, Leugering G Journal article, Original article On S-homogenization of an optimal control problem with control and state constraints (2001) Leugering G, Kogut PI Journal article, Original article On Bernis' interpolation inequalities in multiple space dimensions (2001) Grün G Journal article, Original article Degenerate parabolic equations of fourth order and a plasticity model with nonlocal hardening (1995) Grün G Journal article, Original article Travelling Wave Solutions of a System of Nonlinear Diffusion Equations with Integral Term (1991) Knabner P, Wolfersdorf Lv Journal article