@article{SF_1991__42_3_135074,
     author = {A. Holderrieth},
     title = {Matrix multiplication operators generating one parameter semigroups.},
     journal = {Semigroup forum},
     pages = {155--166},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1991},
     zbl = {0744.47033},
     url = {http://geodesic.mathdoc.fr/item/SF_1991__42_3_135074/}
}