Klagstad, H. 1958. The Phonemic System of Colloquial Standard Bulgarian. Slavic and East European Journal 16. 42–54.
@article{klagstad1958, author = {Klagstad, H.}, journal = {Slavic and East European Journal}, pages = {42–54}, title = {The Phonemic System of Colloquial Standard Bulgarian}, volume = {16}, year = {1958} }