@book{21651,
	author = {Trzaskalik, Tadeusz and Michnik, Jerzy and Michnik, Jerzy ; jt. ed.},
	title = {Multiple objective and goal programming; recent developments},
	publisher = {Physica-Verlag},
	year = {2002},
	series = {Advances in soft computing},
	address = {New York}
}