Suyama, M. & Tokuhiro, T. & Suyama, Y. (1950)
On the Urea Content and the Ammonia Formation of the Muscle of Shark-Fish. I. Nippon Suisan Gakkaishi, 16(5), 211–214

Suyama, M. & Tokuhiro, T. & Suyama, Y. (1950)
On the urea content and ammonia formation in the muscle of a shark I. Bulletin of the Japanese Society of Scientific Fisheries, 16(5), 211–214