PERROS-APOSTOLOPOULOS, P. Introduction to the Philosophy of Free Software . Ηθική. Περιοδικό φιλοσοφίας, [S. l.], n. 1, p. 39–45, 2020. DOI: 10.12681/ethiki.22640. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/ethiki/article/view/22640. Acesso em: 14 apr. 2026.