@article{1102866793,
author = {Ferguson, Le Baron O. and Rusk, Michael D.},
title = {Korovkin sets for an operator on a space of continuous functions.},
journal = {Pacific J. Math.},
volume = {67},
number = {2},
year = {1976},
pages = { 337-345},
language = {en},
url = {http://dml.mathdoc.fr/item/1102866793}
}
Ferguson, Le Baron O.; Rusk, Michael D. Korovkin sets for an operator on a space of continuous functions.. Pacific J. Math., Tome 67 (1976) no. 2, pp. 337-345. http://gdmltest.u-ga.fr/item/1102866793/