@article {15944,
	title = {Reasoning about ignorance: A note on the Bush-Gorbachev problem},
	journal = {Fundam. Inform.},
	volume = {15},
	year = {1991},
	month = {1991///},
	pages = {325 - 332},
	author = {Kraus,S. and Perlis, Don and Horty,J. F}
}
