@misc{indiciaef3965c5ebaae,
  title = {Metkephamid effects on operant behavior.},
  author = {J D Leander and C R Wood},
  doi = {10.1016/0196-9781(82)90013-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/7177922/},
  note = {Source identifier: 7177922}
}