A Class of Non-optimum-time 3n-Step FSSP Algorithms - A Survey. - Hiroshi Umeo; Masashi Maeda; Akihiro Sousa; Kiyohisa Taguchi (PaCT, 2015)

A Generalized Minimum-Time Minimum-State-Change FSSP Algorithm. - Hiroshi Umeo; Keisuke Imai; Akihiro Sousa (TPNC, 2015)

A design of generalized minimum-state-change FSSP algorithms and their implementations. - Hiroshi Umeo; Keisuke Imai; Akihiro Sousa (Nat. Comput., 2018)