Because Players Pay: The Business Model Influence on MMOG Design

@Conference{digra317, title ="Because Players Pay: The Business Model Influence on MMOG Design", year = "2007", author = "Alves, Reis Tiago and Roque, Licinio", publisher = "DiGRA", address = "Tampere", howpublished = "\url{https://dl.digra.org/index.php/dl/article/view/317}", booktitle = "Proceedings of DiGRA 2007 Conference: Situated Play"}