@book{2707,
	author = {Nikaido, Hukukane,},
	title = {Introduction to sets and mappings in modern economics.},
	publisher = {North-Holland Pub. Co.,},
	year = {1970.},
	address = {Amsterdam,},
	note = {Translation of Gendai keizaigaku no sūgakuteki hōhō.}
}