Svetlana V. Dyachenko, Iuliana-Andreea Iachimov. What Are “the Weaknesses” of Non-dissimilative Jakan’je, or on the Pre-stressed Vocalism of the Pskov Dialects of the Ostrov District
Russian Speech. 2026. № 4, Pages. 34 - 46

Sergey V. Knyazev. There’s Less Jakan’je Here (Unstressed Vowel Systems of Two Neighbouring Tambov Dialects)
Russian Speech. 2024. № 1, Pages. 21 - 32