Optimization pricing in the market for voluntary health insurance. World of finance, [S. l.], n. 3(52), p. 7–18, 2019. DOI: 10.35774/sf2017.03.007. Disponível em: http://sf.wunu.edu.ua/index.php/wof/article/view/1132. Acesso em: 5 dec. 2025.