DULLER, C. Die österreichische private Krankenversicherung - Ein Monopol?. Austrian Journal of Statistics, [S. l.], v. 34, n. 4, p. 345–359, 2016. DOI: 10.17713/ajs.v34i4.422. Disponível em: https://www.ajs.or.at/index.php/ajs/article/view/vol34%2C%20no4%20-%203. Acesso em: 9 oct. 2025.