@book{93123,
	author = {Крылов, П.А. and Михалев, А. В.},
	title = {Абелевы группы и их кольца эндоморфизмов},
	publisher = {Факториал пресс},
	year = {2006},
	series = {Advanced studies in mathematics and mechanics},
	address = {Москва}
}