@misc{indiciaea4250f1fe375,
  title = {Resistance to extinction as a function of nonresponse incentive shift.},
  author = {Davenport, D. G. and Mueller, J. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680095609},
  note = {Source identifier: 19680095609}
}