@conference{1814,
  author = {W. Adams and Carl Wieman},
  title = {AIP Conference Proceedings: Problem Solving Skill Evaluation Instrument - Validation Studies},
  year = {2007},
  journal = {unknown},
  publisher = {AIP},
  address = {Syracuse, New York (USA)},
  doi = {10.1063/1.2508681},
}