@article{2177,
  keywords = {pfc},
  author = {Carl Wieman and W. Adams and K. Perkins},
  title = {PHYSICS: PhET: Simulations That Enhance Learning},
  year = {2008},
  journal = {Science},
  volume = {322},
  pages = {682-683},
  month = {10/2008},
  doi = {10.1126/science.1161948},
}