Human ring chromosomes: a report of five cases.

@article{Picciano1972HumanRC,
  title={Human ring chromosomes: a report of five cases.},
  author={D J Picciano and Cheston M. Berlin and Sandra L. H. Davenport and Cecil B Jacobson},
  journal={Annales de genetique},
  year={1972},
  volume={15 4},
  pages={241-7}
}