@book{7625690,
	author = {Шама, Д.В. and Угаров, В.А.},
	title = {Физические принципы общей теории относительности},
	publisher = {Мир},
	year = {1971},
	address = {Москва},
	note = {Доп. тит. л.: The physicae foundations of general relativity. By D.W. Sciama}
}