L. A. Efimov

• Alikovskai︠a︡ ėnt︠s︡iklopedii︠a︡
• Chuvashskie shkoly Povolzhʹi︠a︡ Priuralʹi︠a︡ v 1864-1917 godakh
• Formirovanie i razvitie pedagogicheskoĭ intelligent︠s︡ii Chuvashii v kont︠s︡e XIX-XX v.
• Geroi Sovetskogo Soiuza Miron Efimovich Efimov
• Stranit︠s︡y istorii Chuvashii