ŠPAČEK, M.; VACÍK, E. Design of an Innovative Business Model for Mobile Virtual Network Operators. Quality Innovation Prosperity, [S. l.], v. 20, n. 2, p. 69–88, 2016. DOI: 10.12776/qip.v20i2.772. Disponível em: https://qip-journal.eu/index.php/QIP/article/view/772. Acesso em: 4 dec. 2021.