1. Adams, E. (1999). Three Problems for Interactive Storytellers. Gamasutra. Retrieved from https://wiki.doit.wisc.edu/confluence/download/attachments/39321601/adams1999.pdf
2. Braten, S. (1993). The Virtual Other in Infant’s Mind and Social Feelings. In A.H. Wold (Ed.), The Dialogical Alternative. Towards a Theory of Language and Mind (pp. 77–97). Oslo: Scandinavian University Press.