KALVĀNS, Ēriks. LATGALE INHABITANTS’ SATISFACTION WITH THE STATE IN CONTEXT OF THEIR FEELING OF HAPPINESS. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 1, p. 524–533, 2017. DOI: 10.17770/sie2017vol1.2416. Disponível em: https://archive-journals.rtu.lv/sie/article/view/1442.. Acesso em: 11 mar. 2026.