Materialy i izsli︠e︡dovanii︠a︡ po starinnoĭ russkoĭ literaturi︠e︡.
Maĭkov, Leonid Nikolaevich.
Sanktpeterburg : Tipografii︠a︡ Imperatorskoĭ Akademiĭ Nauk,
1890.
Russian literature