DUARTE, Duarte; MARTINS, Paula Ventura. A Maturity Model for Higher Education Institutions. Journal of Tourism, Sustainability and Well-being, [S. l.], v. 1, n. 1, p. 25–44, 2013. Disponível em: https://journals.cinturs.pt/jtsw/article/view/2. Acesso em: 27 oct. 2025.