HATTORI, M.; TANAKA, Y. License or entry with vertical differentiation in duopoly. Economics and Business Letters, [S. l.], v. 5, n. 1, p. 17–29, 2016. DOI: 10.17811/ebl.5.1.2016.17-29. Disponível em: https://reunido.uniovi.es/index.php/EBL/article/view/10967. Acesso em: 25 apr. 2024.