Istoricheska︠i︡a geografi︠i︡a Rossii : XII-nachala XX v. : Sbornik stateĭ k 70-letni︠i︡u prof. L. G. Beskrovnogo - Beskrovnyĭ, L︠i︡ubomir Grigorʹevich; Narochni︠t︡skiĭ, Alekseĭ Leontʹevich (Nauka, 1975)