http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proishoždenie russkogo, ukrainskogo i belorusskogo âzykov
Izdatel'stvo "Nauka" - Leningradskoe otdelenie
F. P. Filin ; Akademiâ Nauk SSSR. Institut russkogo âzyka.