Complexity of path discovery game problems. - Hiroaki Tohyama; Akeo Adachi (Theor. Comput. Sci., 2000)

Complexity of the Police Officer Patrol Problem. - Hiroaki Tohyama; Masaki Tomisawa (J. Inf. Process., 2022)

Computational complexity of the police officer patrol problem on weighted digraphs. - Masaki Tomisawa; Hiroaki Tohyama (Electron. J. Graph Theory Appl., 2024)