@article{2975,
author = {Olubummo, A.},
title = {An approximation theorem for semigroups of operators},
journal = {Portugaliae mathematica},
volume = {40},
year = {1981},
pages = {383-391},
zbl = {0606.47041},
mrnumber = {0836099},
language = {en},
url = {http://dml.mathdoc.fr/item/2975}
}
Olubummo, A. An approximation theorem for semigroups of operators. Portugaliae mathematica, Tome 40 (1981) pp. 383-391. http://gdmltest.u-ga.fr/item/2975/