Bourchier, James David (1911). "Bulgaria/Language" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 04 (11th ed.). Cambridge University Press. pp. 784–786, see page 786:- "and Petko Slaveikoff (died 1895), whose poems, patriotic, satirical and erotic, moulded the modern poetical language and exercised a great influence over the people".
