@INPROCEEDINGS{Luengo2001,
  author = {Luengo Hendriks, C. L. and van Vliet, L. J.},
  title = {A Rotation-Invariant Morphology for Shape Analysis of Anisotropic Objects and Structures},
  booktitle = {Proceedings of the Fourth International Workshop on Visual Form},
  year = {2001},
  editor = {Arcelli, C. and Cordella, L. P. and Sanniti di Baja, G.},
  volume = {2059},
  series = {Lecture Notes in Computer Science},
  pages = {378-387},
  address = {Berlin},
  publisher = {Springer-Verlag},
  doi = {10.1007/3-540-45129-3_34}
}