A stochastic model of a production-inventory system with consideration of production disruption. - Rubayet Karim; Koichi Nakade (Int. J. Adv. Oper. Manag., 2019)

Analysis of a discrete-time Markov process with a bounded continuous state space by the Fredholm integral equation of the second kind. - Koichi Nakade; Rubayet Karim (RAIRO Oper. Res., 2022)