Jirel Czyzowicz Peter Egyed Hazel Everett David Rappaport Thomas C. Shermer Diane L. Souvaine Godfried T. Toussaint Jorge Urrutia The Aquarium Keeper's Problem. 459-464 1991 conf/soda/1991 SODA db/conf/soda/soda91.html#CzyzowiczEERSSTU91 http://dl.acm.org/citation.cfm?id=127787.127866