@book{53184,
	author = {Szabó, Sándor and Sands, Arthur D.},
	title = {Factoring groups into subsets /},
	publisher = {CRC Press,},
	year = {2009},
	series = {Lecture notes in pure and applied mathematics ;},
	address = {Boca Raton :},
	note = {A Chapman & Hall book."}
}