Zernetska, A. A. “Synergetics of Verbal-Communicative Activity: The Philosophy of System Development in Diachrony”. Scientific Journal of National Pedagogical Dragomanov University. Series 9. Current Trends in Language Development, no. 17, Aug. 2018, pp. 148-64, doi:10.31392/NPU-nc.series9.2018.17.11.