@misc{indiciae0436193fe6c5,
  title = {Multiple cyclic nucleotide phosphodiesterase activities from rat brain.},
  author = {W J Thompson and M M Appleman},
  year = {1971},
  url = {https://pubmed.ncbi.nlm.nih.gov/4321663/},
  note = {Source identifier: 4321663}
}