1. Introduction to Approximation Theory Chelsea Pupishing Company New York Second;Cheney;Edition,1982
2. A generalization of Szász - Mirakyan operators based on q - integers Modelling;Aral;Math Comput,2008
3. On a generalization of Baskakov operator Rou maine Math Pures;Altomare;Rev Appl
4. The order of approximation some unbounded functions by the sequences of positive linear operators Turkish On the Baskakov operator Indian No;İbikli;Math Math,1995
5. An example of sequence of linear positive operators in the space of continuous functions;Baskakov;Akad Nauk SSSR,1957