@misc{indiciaeaccd82ccb6d5,
  title = {A scheme for viroid classification.},
  author = {A M Koltunow and M A Rezaian},
  year = {1989},
  doi = {10.1159/000150093},
  url = {https://pubmed.ncbi.nlm.nih.gov/2777536/},
  note = {Source identifier: 2777536}
}