@book{15795,
	author = {Bazaraa, Mokhtar S. and Shetty, C. M. and Shetty, C. M. ; jt. auth.},
	title = {Foundation of optimization},
	publisher = {Springer-Verlag},
	year = {1976},
	series = {Lecture notes in Economics and Mathematical Systems},
	address = {Berlin}
}