Яковлевич Бурмистрович, Юрий. 2009. “From the Distinction Between Palatalized and Palatal Consonants to the Distinction Between Palatalizations and Palatations of Velar Consonants in the Proto-Slavic Language”. Slavistica Vilnensis 54 (2): 57–64. https://www.journals.vu.lt/slavistica-vilnensis/article/view/26882.