Craven, M., Taylor, I., Drozd, A., Purbrick, J., Greenhalgh, C., Benford, S., …Hoch, M. (2001). Exploiting Interactivity, Influence, Space and Time to Explore Non-linear Drama in Virtual Worlds. In CHI '01: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 30-37. doi:10.1145/365024.365032