Letopisnai︠a︡ statʹi︠a︡ 6523 goda i ee istochnik. Opyt analiza.
Ilʹin, Nikolai Nikolaevich.
Moskva,
1957.
Titlepage headed: Akademii︠a︡ Nauk SSSR. Institut Slavi︠a︡novedenii︠a︡.