The Denjoy integral in some approximation problems, IV P. Pych — 1976 Commentationes Mathematicae The article contains no abstract
Theorems of the Romanovski type for the Denjoy-Perron integrals P. Pych — 1972 Commentationes Mathematicae The article contains no abstract
Approximation of functions in L-and C-metrics P. Pych — 1968 Commentationes Mathematicae The article contains no abstract
On the rate of convergence of the Durrmeyer polynomials G. Anioł; P. Pych-Taberska — 1990 Commentationes Mathematicae The article contains no abstract