Verkhovnyĭ Taĭnyĭ Sovi︠e︡t /
Vi︠a︡zemskiĭ, Boris Leonidovich,kni︠a︡zʹ.
The Hague :  Mouton, 
1969.
Reprint of the St. Petersburg, 1909 edition.
Russia. Verkhovnyi Tainyi Sovet.