Difference method for an elliptic system of nonlinear differential-functional equations. Mosurski, Ryszard — 2005 Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica
A difference scheme for an elliptic system of nonlinear differential-functional equations with Dirichlet type boundary conditions. The existence and uniqueness of solution Bogusław Bożek; Ryszard Mosurski — 1984 Annales Polonici Mathematici