• DML-CZ Home
• Commentationes Mathematicae Universitatis Carolinae

Author: Tomczak, Karolina

• Rempulska, Lucyna; Tomczak, Karolina: On approximation of functions by certain operators preserving $x^2$. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 49 (2008), issue 4, pp. 579-593