@book{31872,
	author = {Buffa, Elwood Spencer},
	title = {Operations management: problems and models},
	publisher = {Wiley},
	year = {[1972]},
	series = {Wiley series in management and administration},
	address = {New York},
	edition = {3d ed.},
	note = {First ed. published in 1963 under title: Models for production and operations management.}
}