Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Mathematische Besliskunde

Tijms, H. (1971). A formula for the longrun average cost in semi-Markov decision models applied on a number of continuous time inventory models. In Stichting Mathematisch Centrum. Mathematische Besliskunde (BW 9/71). Stichting Mathematisch Centrum.