Bistra Andreeva, William J. Barry, Jacques C. Koreman. The bulgarian stressed and unstressed vowel system. a corpus study. In Frédéric Bimbot, Christophe Cerisara, Cécile Fougeron, Guillaume Gravier, Lori Lamel, François Pellegrino, Pascal Perrier, editors, INTERSPEECH 2013, 14th Annual Conference of the International Speech Communication Association, Lyon, France, August 25-29, 2013. pages 345-348, ISCA, 2013. [doi]