1. Part 55: , Liebigs Ann. Chem. 1992, 817–823.
2. [2a] Poisons and Venomous Marine Animals of the World, Vol. I, U.S. Government Printing Office, Washington D.C., 1965, p. 537.
3. [2b] – Poisons and Venomous Marine Animals of the World, (Rev. Ed.), The Darwin Press, INC., Princeton, New Jersey, 1978, p. 145–146.
4. [2c] – in Marine Natural Products. Chemical and Biological Perspectives (Eds.: ), Academic Press, New York 1983, Vol. V, p. 287.
5. Biological activity of saponins and saponin-like compounds from starfish and brittle-stars