Latkin, Vasily Nikolaevich (historian of law, 1858-1927). Zemsky Sobors of ancient Russia, their history and organization in comparison with Western European representative institutions. St. Petersburg: The Edition of LF Panteleyev, 1885.
Latkin, Vasily Nikolaevich (historian of law, 1858-1927). Materials for the history of the Zemsky Sobors of the XVII century (1619-20, 1648-49 and 1651). S.-Petersburg: Typography of V. V. Komarov, 1884.
Sudavtsov, Nikolai Dmitrievich (doctor of historical sciences, 1937-). The introduction of zemstvo in the south-east of Russia by law on June 9, 1912: the last zemstvo of Russia. St. Petersburg: Presidential Library, 2014.
Elections to the Russian State Duma in the early 20th c.
A special meeting for the drafting of the Regulations on Elections to the Constituent Assembly. Articles of Professor NI Lazarevsky "Proportional elections" and L. V. Keller "Proportional representation on the basis of universal, equal, direct and secret ballot".