The run-up to "Grand Theft Auto IV" has been considerably less ballyhooed than last year's over-the-top "Halo 3" debut. Yet when "GTA IV" parks on store shelves on April 29, the latest entry in the controversial video game franchise could be the most lucrative launch in entertainment history
O. Chapelle, D. Metlzer, Y. Zhang, and P. Grinspan. Proceedings of the 18th ACM conference on Information and knowledge management, page 621--630. New York, NY, USA, ACM, (2009)