@misc{indiciae94715f3d8fd6,
  title = {Q-beta-replicase and E. coli transcriptase: requirements for substrate selection as revealed by a study of base analogs.},
  author = {A M Kapuler and S Spiegelman},
  year = {1970},
  doi = {10.1073/pnas.66.2.539},
  url = {https://pubmed.ncbi.nlm.nih.gov/4915889/},
  note = {Source identifier: 4915889}
}