A software reliability growth model with two types of errors Shigeru Yamada; Shunji Osaki; Hiroyuki Narihisa — 1985 RAIRO - Operations Research - Recherche Opérationnelle
Nonhomogeneous software error detection rate model : data analyses and applications Shigeru Yamada; Hiroyuki Narihisa; Hiroshi Ohtera — 1986 RAIRO - Operations Research - Recherche Opérationnelle