Ozawa toshihisa, Masahiro Kobayashi. Exact asymptotic formulae of the stationary distribution of a discrete-time two-dimensional QBD process. Queueing Systems. 2018. 90. 351-403
Yutaka Sakuma, Atsushi Inoie, Masahiro Kobayashi. Simple approximate analysis for parallel queues with patients' deteriorating health conditions. The 4th Asian Conference on Defense Technology. 2017
Hiroyuki Masuyama, Yutaka Sakuma, Masahiro Kobayashi. Simple error bounds for the QBD approximation of a special class of two dimensional reflecting random walks. ACM International Conference Proceeding Series. 2016
An arrival-time distribution for the equilibrium mean waiting time of a discrete-time single-server queue with acceptance period and Poissonian population of customers. 2017. 157-161