For citations:

Borisova T.S. On the Problem of the Old Russian Version of the Slavonic Liturgical Books (Based on the East Slavonic Scriptsof the Great and Holy Friday Antiphons of 11^th - 14^th Centuries). Vestnik NSU. Series: History and Philology. 2019;18(2):15-30. (In Russ.) https://doi.org/10.25205/1818-7919-2019-18-2-15-30