“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, vol. 43, no. -, Jan. 2020, pp. 41-49, https://doi.org/10.26565/2227-6521-2019-43-05.