Some specific features of the corrected orthogonal electrocardiographic system in childhood.

@article{Moumdjiev1977SomeSF,
  title={Some specific features of the corrected orthogonal electrocardiographic system in childhood.},
  author={N Moumdjiev},
  journal={Advances in cardiology},
  year={1977},
  volume={19},
  pages={68-70}
}