V. V. Boguslavskiĭ

• Drevni͡ai͡a Rusʹ, Ri͡urikovichi
• Praviteli Rossii
• Ri︠u︡rikovichi i Rusʹ
• Rusʹ, Ri︠u︡rikovichi
• Slavi︠a︡nskai︠a︡ ėnt︠s︡iklopedii︠a︡