Differences in Glottal Opening Pattern between Tokyo and Osaka Dialect Speakers: Factors Contributing to Vowel Devoicing 論文 Masako Fujimoto・Emi Z. Murano・Seiji Niimi・Shigeru Kiritani ·2002-01-01 ·『Folia Phoniatrica et Logopaedica』 54(3) pp. 133-143 doi:10.1159/000063409