Approximation of functions of two variables in L * ϕ -metrics B. Firlej — 1972 Commentationes Mathematicae The article contains no abstract
On the absolute and strong summability of numerical and orthogonal series by the methods connected with the Dirichlet problem for an elliptic domain B. Firlej; L. Rempulska — 1989 Commentationes Mathematicae The article contains no abstract
Some remarks on spaces provided with mixed norm B. Firlej; W. Matuszewska — 1974 Commentationes Mathematicae The article contains no abstract
Approximation of functions of two variables by some operators in weighted spaces B. Firlej; M. Leśniewicz; L. Rempulska — 1999 Rendiconti del Seminario Matematico della Università di Padova