Opyty i issledovanii︠a︡ : pervyĭ sbornik stateĭ /
Kli︠u︡chevskiĭ, V. O.(Vasiliĭ Osipovich),1841-1911.
Petrograd :  Literaturno-izdatelʹskiĭ otdel Komissariata Narodnogo Prosveshchenii︠a︡, 
1918.