M. B.  Tanu and Noguchi, T., ?Tetrodotoxin as a toxic principle in the horseshoe crab Carcinoscorpius rotundicauda collected from Bangladesh?, Journal of the Food Hygienic Society of JapanJournal of the Food Hygienic Society of Japan, 1999.

A.  Kungsuwan, Nagashima, Y., Noguchi, T., Shida, Y., Suvapeepan, S., Suwansakornkul, P., and Hashimoto, K., ?Tetrodotoxin in the horseshoe crab Carcinoscorpius rotundicauda inhabiting Thailand?, Nippon Suisan GakkaishiNippon Suisan Gakkaishi, vol. 53, pp. 261-266, 1987.