Fermüller C, Kropatsch W.  1992.  Hierarchical curve representation. , 11th IAPR International Conference on Pattern Recognition, 1992. Vol.III. Conference C: Image, Speech and Signal Analysis, Proceedings. :143-146.

Fermüller C, Kropatsch W.  1992.  Multi-resolution shape description by corners. , 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 1992. Proceedings CVPR '92. :271-276.