Ultrastructure of the myocardium of the atrial appendage.

@article{Lannigan1966UltrastructureOT,
  title={Ultrastructure of the myocardium of the atrial appendage.},
  author={Robert Lannigan and Saniha A. Zaki},
  journal={British heart journal},
  year={1966},
  volume={28 6},
  pages={796-807}
}