Sato, Y. & Takatsuji, K. & Masai, H. (1983)
Brain organization of sharks, with special reference to archaic species. Journal für Hirnforschung, 24(3), 289–295

Masai, H. & Sato, Y. & Aoki, M. (1973)
The brain of Mitsukurina owstoni. Journal für Hirnforschung, 14(6), 493–500

Masai, H. (1963)
On the Central Nervous System of Notorhynchus platycephalus. Japanese Journal of Ichthyology, 10(1–2), 27–30

Masai, H. (1962)
On the external form of the brain of Heterodontus japonicus. Yokohama Medical Bulletin, 13, 249–257

Masai, H. (1961)
On the brain pattern of Chlamydoselachus anguineus. Yokohama Medical Bulletin, 12, 231–238