@article{urn:eudml:doc:38995, title = {A Korovkin-type theorem in the space of Riemann integrable funciotns.}, journal = {Collectanea Mathematica}, volume = {38}, year = {1987}, pages = {199-228}, zbl = {0666.46031}, mrnumber = {MR0992526}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38995} }
Campiti, Michele. A Korovkin-type theorem in the space of Riemann integrable funciotns.. Collectanea Mathematica, Tome 38 (1987) pp. 199-228. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38995/