VALIMAKI, Mikko. Dual Licensing in Open Source Software Industry. Systèmes d’Information et Management (French Journal of Management Information Systems), [S. l.], v. 8, n. 1, p. 63–75, 2003. Disponível em: https://revuesim.org/index.php/sim/article/view/134. Acesso em: 8 jul. 2026.