@inbook{890,
  author = {Gautam Biswas and Daniel Schwartz and John Bransford},
  title = {Technology support for complex problem solving: From SAD environments to AI},
  year = {2001},
  journal = {Smart Machines in Education},
  chapter = {3},
  pages = {71-98},
  publisher = {AAAI Press},
  address = {Menlo Park, CA},
}