Dva t︠s︡ari︠a︡ : Fedor i Boris /
Morozova, L. E.
Moskva : Russkoe slovo,
2001.
Includes bibliographical references.
Boris Fyodorovich Godunov, Czar of Russia, 1551 or 1552-1605.
Fyodor I, Czar of Russia, 1557-1598.