http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
podgotovka teksta, statʹi︠a︡ i kommentarii I.P. Eremina.
Akademii︠a︡ nauk SSSR. Literaturnye pami︠a︡tniki