Drevnerusskie pisʹmennye istochniki : X-XIII vv. /
Shchapov, I︠A︡roslav Nikolaevich.
Institut istorii SSSR (Akademii︠a︡ Nauk SSSR)
Moskva : Izd-vo "Krugʹ",
1991.
At head of title: Institut istorii SSSR AN SSSR.
Includes index.
Manuscripts, Russian (Old)