Pevets i grazhdanin tvorchestvo S. Esenina v literaturnom protsesse 1-i poloviny 20-x godov
I︠U︡dkevich, Lev Gdalʹevich.
Kazan Izd-vo Kazanskogo un-ta
1976
Esenin, Sergeĭ Aleksandrovich, 1895-1925