@misc{indiciae6140a950a641,
  title = {An automated variable-force operandum.},
  author = {S J Weiss},
  year = {1968},
  doi = {10.1901/jeab.1968.11-800},
  url = {https://pubmed.ncbi.nlm.nih.gov/16811325/},
  note = {Source identifier: 16811325}
}