Sternberg's best known piece of writing is probably the erotic short story "The Only Fair Game" , which became famous/infamous for raising legal questions about fan fiction. Its speculation about homosexual and BDSM practices among Larry Niven's Kzinti got Sternberg a cease-and-desist letter from Niven's lawyers in an incident that to date remains notorious within the SF fandom community. Elf Sternberg claims the story is covered under parody protections; Larry Niven maintains that the story is a violation of copyright, but has not pursued further legal action. Larry Niven commented directly on this issue in a Slashdot interview.
Elf is also the creator of The Journal Entries of Kennet R'yal Shardik, a long-running series of short erotica featuring a massive body of work covering the fictional ringworld Pendor (The Pendorwright Projects), and the wide variety of humans, humanoid species, robots, and artificial intelligences that inhabit it.