Tsebelʹdinskai︠a︡ nakhodka : iz istorii revoli︠u︡tsionnykh svi︠a︡zeĭ mezhdu Peterburgom i kavkazom /
Leĭberov, Igorʹ Pavlovich.
Moskva :  Politizdat, 
1976.
Voronov family.
Revolutionaries, Russian.