Totik, V. Approximation in \(L_ 1\) by Kantorovich polynomials. (English) Zbl 0501.41024 Acta Sci. Math. 46, 211-222 (1983). MSC: 41A65 41A10 41A35 41A25 41A27 PDFBibTeX XMLCite \textit{V. Totik}, Acta Sci. Math. 46, 211--222 (1983; Zbl 0501.41024)
Totik, V. On the equiconvergence of different kinds of partial sums of orthogonal series. (English) Zbl 0497.42015 Acta Sci. Math. 46, 223-232 (1983). MSC: 42C15 PDFBibTeX XMLCite \textit{V. Totik}, Acta Sci. Math. 46, 223--232 (1983; Zbl 0497.42015)