@article{GDZPPN002029286,
title = {Linear approximation processes in locally convex spaces. I. Semigroups of operators and saturation.},
journal = {Aequationes mathematicae},
volume = {14},
year = {1976},
pages = {73-82},
zbl = {0325.41027},
url = {http://dml.mathdoc.fr/item/GDZPPN002029286}
}
Becker, Michael. Linear approximation processes in locally convex spaces. I. Semigroups of operators and saturation.. Aequationes mathematicae, Tome 14 (1976) pp. 73-82. http://gdmltest.u-ga.fr/item/GDZPPN002029286/