@book{dobrev_old_1995, address = {Sofia}, title = {Old {Bulgar} {Language} - {Vocabulary} and {Grammar} ({Ezikyt} na {Asparukhovite} i {Kuberovi} bylgari, {Rechnik} i {Gramatika})}, url = {http://groznijat.tripod.com/b_lang/}, urldate = {2019-09-21}, author = {Dobrev, Peter}, year = {1995} }