@book{500,
	author = {Barlotti, A. and Universit�a degli studi di Trento. and Symposium on "Combinatorial Structures and their Applications"},
	title = {Combinatorial and geometric structures and their applications},
	publisher = {North-Holland Pub. Co.,},
	year = {1982.},
	series = {North-Holland mathematics studies ;},
	address = {Amsterdam :},
	note = {"Symposium on 'Combinatorial Structures and their Applications' was held at Villa Madruzzo (Cognola di Trento), on October 20-25, 1980 ... and sponsored by the Centro interuniversitario per la ricerca matematica (C.I.R.C.M.) of the 'Universit� di Trento'"--Pref.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10288641}
}