@article{beichner_bernold_burniston_dail_felder_gastineau_gjertsen_risley_1999, title={Case study of the physics component of an integrated curriculum}, volume={67}, ISSN={["0002-9505"]}, DOI={10.1119/1.19075}, number={7}, journal={AMERICAN JOURNAL OF PHYSICS}, author={Beichner, R and Bernold, L and Burniston, E and Dail, P and Felder, R and Gastineau, J and Gjertsen, M and Risley, J}, year={1999}, month={Jul}, pages={S16–S24} }
 @article{beichner_gastineau_e._v._h._ritchie_l._risley_1995, title={Hardware and software preferences}, volume={33}, ISBN={0031-921X}, DOI={10.1119/1.2344217}, number={5}, journal={Physics Teacher}, author={Beichner, Robert and Gastineau, Wilkinson L. K. and E., Engelhardt J. and V., Gjertsen P. and H., Hazen M. and Ritchie, M. and L. and Risley, J. S.}, year={1995}, pages={270–274} }