@misc{indiciae36544912ce4b,
  title = {A difference between intracellular and viral supercoiled PM2 DNA.},
  author = {R Espejo and E Espejo-Canelo and R L Sinsheimer},
  year = {1971},
  doi = {10.1016/0022-2836(71)90405-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/5573016/},
  note = {Source identifier: 5573016}
}