Horniatko-Szumiłowicz, Anna, and Tetiana Monachowa. “Linguistic Processes in the Kaleidoscope of Spoken Language Namely, on the Most Recent Trends in the Development of Russian and Ukrainian Languages”. Poznańskie Studia Slawistyczne, no. 15, Mar. 2019, pp. 307–314, doi:10.14746/pss.2018.15.18.