S.A.Tolstaya (left) and T.A.Bers (right)
Unknown author<span style="display: none;">Unknown author</span>
1860s <div style="display: none;">date QS:P,+1860-00-00T00:00:00Z/8</div>
«Tolstoy and Tolstoys», Moscow, Sovetskaya Rossiya, 1990, р. 189