@book{10608186,
	author = {Rozenfel'd, B. A. and Juškevič, A. P.},
	title = {ˆThe ‰prehistory of non-Euclidean geometry in the medieval East},
	publisher = {Oriental lit. publ. house},
	year = {1960},
	series = {Papers presented by the USSR delegation},
	address = {M.}
}