Mitochondrial DNA from sheep heart.

@article{Kroon1966MitochondrialDF,
  title={Mitochondrial DNA from sheep heart.},
  author={A. Kroon and Piet Borst and E. F. van Bruggen and G J Ruttenberg},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1966},
  volume={56 6},
  pages={1836-43}
}