http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
S drevnejšich vremën do načala XVI veka / T.V. Černikova, K.P. Čilikin
Russian history. 6, From ancient times to the beginning of the 16th century
Rossijskoe voenno-istoričeskoe obščestvo