Holman's World a.k.a. Belzagor is the planet that is the setting for Robert Silverberg's 1970 novel Downward to the Earth, Like Robert Holstock's 1976 Eye Among the Blind, Silverbergs novel explores the alienness of contact with extraterrestrials. That encounter is echoed, if faintly, in R.M. Meluch's novel The Ninth Circle, where humans encounter several species of DNA based sentients on the planet Zoe.