Tachibana, K.; Scheuer, P. J.; Tsukitani, Y.; Kikuchi, H.; van Engen, D.; Clardy, J.; Gopichand, Y.; Schmitz, F. J. (1981). «Okadaic acid, a cytotoxic polyether from two marine sponges of the genus Halichondria». Journal of the American Chemical Society103 (9): 2469-2471. doi:10.1021/ja00399a082.