Text ( visual ) : unmediated Българска фонетика / Димитър Тилков, Тодор Бояджиев. -- 2. стереотипно изд. -- София : Наука и изкуство , 1981. -- 253 p. : ill. ; 22 cm. -- Bibliography: p. 244-248. -- (BA28211301) ; https://ci.nii.ac.jp/ncid/BA28211301 Other Title(s): Bŭlgarska fonetika. -- Author Heading(s): Tilkov, Dimitŭr ; Boi︠a︡dzhiev, Todor Apostolov. -- Classification(s): LCC : PG840. -- Subject Heading(s): LCSH : Bulgarian language -- Phonology ; LCSH : Bulgarian language -- Phonetics ; LCSH : Bulgarian language -- Pronunciation