@inbook {Фет1987,
	title = {Пролог},
	booktitle = {Словарь книжников и книжности Древней Руси. },
	volume = {1. XI-первая половина XIV в.},
	year = {1987},
	pages = {376-381},
	address = {Ленинград},
	author = {Фет, Е.}
}
