Quaternionic Gabor filters for local structure classification
@InProceedings{buelow98icpr,
  author = 	 {T. B{"u}low and G. Sommer},
  title = 	 {Quaternionic {G}abor filters for local structure classification},
  booktitle = 	 {14th International Conference on Pattern Recognition, ICPRŽ98},
  editor =       {A.K. Jain and S. Venkatesh and B.C. Lovell},  
  volume =	 1,
  year =	 1998,
  publisher =	 {IEEE Computer Society},
  organization =	 {Brisbane, Australia, August 16-20},
  pages =	 {808-810},
  }