Poėtika Drevnerusskoĭ Literatury /
Likhachev, Dmitriĭ Sergeevich.
Adrianova-Perett︠s︡, V. P.
Leningrad : Akademii︠a︡ Nauk SSSR, Institut Russkoĭ Literatury [Pushkinskiĭ Dom],
1967.