On the existence of unique minimum for the cost function in a (Q,R) inventory model with backorders George E. Halkos, Ilias S. Kevork? and Christos N. Tziourtzioumis

On the existence of unique minimum for the cost function in a (Q,R) inventory model with backorders. IMA Journal of Management Mathematics, 29(1): 1-21, DOI: 10.1093/imaman/dpw010 (SCOPUS, ISI Listed. Συντελεστής βαρύτητας: 1.529 και 5-ετίας: 1.525). Από κοινού με I.S. Kevork and C.N. Tziourtzioumis (2018).