@misc{696,
  author = {J. Tan and C. Beers and R. Gupta and G. Biswas},
  title = {Computer games as intelligent learning environments: A river ecosystem adventure},
  year = {2005},
  journal = {Artificial Intelligence in Education - Supporting Learning through Intelligent and Socially Informed Technology},
  pages = {646-653},
  publisher = {IOS Press},
  address = {Amsterdam},
}