Marriage of a Chuvash. K. Prokopiev. - Kazan: Tipo-lit. Un-ta, 1903. - , 63 p. ; 25. - Part of the text on the Tatars. Bibliogr. in the note .. - Ott. from the "News of the Island of Archeology, History and Ethnography at the Kazan University." 1903, Vol. 19.
1. Territory of Russia: Chuvash Republic (collection). 2. The Chuvash Republic: pages of history (collection).