финно-угорские языки
Vadim V. Dyachkov. STRUCTURAL AND SOCIOLINGUISTIC FEATURES OF HILL MARI — RUSSIAN CODE SWITCHING: A PILOT STUDY
Trudy IRY RAS. 2020. № 4 (26), Pages. 273 - 289
Olga V. Mishchenko. ON THE ETYMOLOGY OF THE OLD RUSSIAN WORD «PUZ»
Trudy IRY RAS. 2015. № 1 (4), Pages. 243 - 258