Columbia subject headings:
Harvard subject headings:
Bulgaria--Relations--Ukraine.
Bulgarian literature--1762-1900--History and criticism.
Comparative Literature--Bulgarian and Ukrainian.
Comparative Literature--Ukrainian and Bulgarian.
Franko, Ivan, 1856-1916--Influence.
Ukraine--Relations--Bulgaria.
Ukraïnka, Lesi͡a, 1871-1913--Influence.
Princeton subject headings:
Bulgarian literature--19th century--History and criticism.
Comparative literature--Bulgarian and Ukrainian.
Comparative literature--Ukrainian and Bulgarian.
Ukrainian literature--19th century--History and criticism.