@misc{indiciae9693736c6630,
  title = {Caffeine elevates reinforcement threshold for electrical brain stimulation: tolerance and withdrawal changes.},
  author = {G K Mumford and D B Neill and S G Holtzman},
  year = {1988},
  doi = {10.1016/0006-8993(88)90298-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/3167574/},
  note = {Source identifier: 3167574}
}