Russian heraldika

Winkler, Pavel Pavlovich vonRussian Heraldry: History and Description of Russian coat of arms, depicting all the noble coat of arms introduced into the general gerbank of the All-Russian Empire / P. von Wincler.- St. Petersburg: type-lit.I.A.Efron, 1892-1894.- 36. -.1. Generic coat of arms - Russia.BBK 63.215 (2)Electronic Source: PB