Columbia subject headings:
Lermontov, Mikhail I︠U︡rʹevich, 1814-1841--Congresses.
Harvard subject headings:
Lermontov, Mikhail I︠U︡rʹevich, 1814-1841--Congresses.
Princeton subject headings:
Lermontov, Mikhail I︠U︡rʹevich, 1814-1841--Congresses.