akanye
Leonid L. Kasatkin. Akanye and jakanye in one old believers dialects and the historical issues of these vocalism systems
RJANO. 2013. № 1 (25), Pages. 70 - 85
Dmitry M. Savinov. Aspects of investigation of Northwest Russian dialects (instrumental phonetic study of the vowel system in one idiolect)
RJANO. 2013. № 1 (25), Pages. 86 - 110