Borodenko, Oleh. 2020. “Feeling of Happiness in Self-Assessments of Ukrainians”. Visnyk of V. N. Karazin Kharkiv National University. Series "Sociological Studies of Contemporary Society: Methodology, Theory, methods" 43 (-), 41-49. https://doi.org/10.26565/2227-6521-2019-43-05.