@article{05636853,
title = {Approximation by modified Sz\'asz-Mirakyan operators.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {10},
year = {2009},
zbl = {1180.41021},
language = {en},
url = {http://dml.mathdoc.fr/item/05636853}
}
Rempulska, L.; Graczyk, S. Approximation by modified Szász-Mirakyan operators.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 10 (2009) . http://gdmltest.u-ga.fr/item/05636853/