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@article{JRAM_1963__212_150570, author = {J.H.B. Kemperman}, title = {The {Semigroup} {Property} for the {Birth} and {Death} {Process.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {80--103}, publisher = {mathdoc}, volume = {212}, year = {1963}, zbl = {0124.08605}, url = {http://geodesic.mathdoc.fr/item/JRAM_1963__212_150570/} }
J.H.B. Kemperman. The Semigroup Property for the Birth and Death Process.. Journal für die reine und angewandte Mathematik, Tome 212 (1963), pp. 80-103. http://geodesic.mathdoc.fr/item/JRAM_1963__212_150570/