@book{9056,
	author = {Conference on "Combinatorics", Keszthely, Hungary, July 19-24, 1993 and Miklos, D. ; ed.},
	title = {Combinatorics, Paul Erdos is eighty; proceedings of an International conference in honour of Paul Erdo's 80th birthday},
	publisher = {Janos Bolyai Mathematical Society},
	year = {1996},
	address = {Hungary}
}