Connections which are harmonic with respect to general natural metrics

@article{Bejan2012ConnectionsWA,
  title={Connections which are harmonic with respect to general natural metrics},
  author={C. L. Bejan and Simona-Luiza Druţǎ-Romaniuc},
  journal={Differential Geometry and Its Applications},
  year={2012},
  volume={30},
  pages={306-317}
}
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