@book{21066,
	author = {Tomescu, Ioan.},
	title = {Problems in combinatorics and graph theory},
	publisher = {Wiley},
	year = {c1985.},
	series = {Wiley-Interscience series in discrete mathematics},
	address = {New York},
	note = {Translation of: Probleme de combinatorică și teoria grafurilor.}
}