@article{morard2011geodesic,
  title={Geodesic attributes thinnings and thickenings},
  author={Morard, V. and Decenci{\`e}re, E. and Dokladal, P.},
  journal={Mathematical Morphology and Its Applications to Image and Signal Processing},
  pages={200--211},
  year={2011},
  publisher={Springer}
}