Autor:	Muse, Mike, Weaver, A., Mays, Harry, Barker, Daniel, Donovan, D. M., Ashworth, Mike, Carr, Alison, Porter, Sylvia, Houghton, Reg, Kirkman, Diane, Sims, Rodney, Weightman, Bill, Davies, Keith, Grover, L. R., Simerda, Bohumir
Zdroj:	British Cactus & Succulent Journal, 1989 Dec 01. 7(4), 115-118.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/42792712 Zobrazit plný text záznamu