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@Article{PhysRevSTPER.4.020105,
  title = {Plasticity of intermediate mechanics students\char39{} coordinate system choice},
  author = {Sayre, Eleanor C. and Wittmann, Michael C.},
  journal = {Phys. Rev. ST Phys. Educ. Res.},
  volume = {4},
  number = {2},
  pages = {020105},
  numpages = {14},
  year = {2008},
  month = {Nov},
  doi = {10.1103/PhysRevSTPER.4.020105},
  publisher = {American Physical Society}
}