Problemy istorii feodalʹnoĭ Rossii : sbornik stateĭ k 60-letii︠u︡ V. V. Mavrodina /
Shapiro, A. L.(Aleksandr Lʹvovich)
Mavrodin, Vladimir Vasilʹevich,1908-1987.
Leningrad : Izdatelʹstvo Leningradskogo Universiteta,
1971.
Feudalism