@article{GDZPPN002441438,
title = {Matrices of operators and regularized semigroups.},
journal = {Mathematische Zeitschrift},
volume = {212},
year = {1993},
pages = {619-630},
zbl = {0792.47041},
url = {http://dml.mathdoc.fr/item/GDZPPN002441438}
}
Laubenfels, R. de. Matrices of operators and regularized semigroups.. Mathematische Zeitschrift, Tome 212 (1993) pp. 619-630. http://gdmltest.u-ga.fr/item/GDZPPN002441438/