Takahashi, T. & Shiokawa, A. (1954)
Physico-chemical studies on the skin and leather of marine animals -DC. Swelling of shark skin (1). Bulletin of the Japanese Society of Scientific Fisheries, 19(12), 1203–1218

Takahashi, T. & Shiokawa, A. (1953)
Physico-chemical studies on the skin and leather of marine animals IV. On the water in shark skin. Bulletin of the Japanese Society of Scientific Fisheries, 18(8), 333–340