@article{GDZPPN00126088X, title = {Matrix multiplication operators generating one parameter semigroups.}, journal = {Semigroup forum}, volume = {43}, year = {1991}, pages = {155-166}, zbl = {0744.47033}, url = {http://dml.mathdoc.fr/item/GDZPPN00126088X} }
Holderrieth, A. Matrix multiplication operators generating one parameter semigroups.. Semigroup forum, Tome 43 (1991) pp. 155-166. http://gdmltest.u-ga.fr/item/GDZPPN00126088X/