A new optimum-time firing squad synchronization algorithm for two-dimensional rectangle arrays freezing-thawing technique based. - Hiroshi Umeo; Takuya Yamawaki; Kinuo Nishide (HPCS, 2010)

A New Optimum-Time Firing Squad Synchronization Algorithm for Two-Dimensional Rectangle Arrays: One-Sided Recursive Halving Based. - Hiroshi Umeo; Kinuo Nishide; Takuya Yamawaki (CiE, 2011)

A Simple Optimum-Time FSSP Algorithm for Multi-Dimensional Cellular Automata - Hiroshi Umeo; Kinuo Nishide; Keisuke Kubo (AUTOMATA & JAC, 2012)

A class of time-optimum FSSP algorithms for multi-dimensional cellular arrays. - Hiroshi Umeo; Keisuke Kubo; Kinuo Nishide (Commun. Nonlinear Sci. Numer. Simul., 2015)