Columbia subject headings:
Todorov, Petko I︠U︡rdanov, 1879-1916--Criticism and interpretation.
Harvard subject headings:
Todorov, Petko I︠U︡rdanov, 1879-1916--Criticism and interpretation.
Princeton subject headings:
Todorov, Petko I︠U︡rdanov, 1879-1916--Criticism and interpretation.