@article{ETD,
      recid = {1764},
      author = {Martin, Glen K.},
      title = {Factors affecting the direction of classically conditioned  heart-rate responses of rats: influence of instrumental  contingencies, degree of restraint, and skeletal-motor  activity},
      school = {Ph.D.},
      address = {1975},
      number = {ETD},
      url = {http://digitalcollections.ohsu.edu/record/1764},
      doi = {https://doi.org/10.6083/M48050TZ},
}