@book{39458,
	author = {Halmos, Paul R.},
	title = {Naive set theory},
	publisher = {Springer-Verlag},
	year = {[1974]},
	series = {Undergraduate texts in mathematics},
	address = {New York},
	note = {Reprint of the 1960 ed. published by Van Nostrand, Princeton, N.J., in series: The University series in undergraduate mathematics.}
}