Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OONO Makio,A Hypothesis on the Origin of the Central Vowel in the Dialects of East Japan: in Comparison with the Vowel Shift in the Ryukyuan Dialects(Phonetics and Phonology of Eastern Japanese Dialects),Journal of the Phonetic Society of Japan,13428675,The Phonetic Society of Japan,2011,15,3,27-36,https://cir.nii.ac.jp/crid/1390282679763759360,https://doi.org/10.24467/onseikenkyu.15.3_27