Popovych, I., O. Semenov, A. Skliaruk, K. Sotnikova, and N. Semenova. “Research of the Dominant Psycho-Emotional States of University Lecturers During the Progression of the COVID-19 Pandemic”. Amazonia Investiga, Vol. 10, no. 48, Dec. 2021, pp. 52-62, doi:10.34069/AI/2021.48.12.6.