@book{286797,
	author = {Krutikov, Pavel Grigor΄evič and Princev, Nikolaj Andreevič},
	title = {Èrmitaž : Nauki služat muzam},
	publisher = {Nauka},
	year = {1989},
	series = {Istoriâ nauki i tehniki},
	address = {Leningrad}
}