@InProceedings{icms-96,
  author = 	 {Ertl, T.},
  title = 	 {{Computer Graphics -- Principles and Practice}},
  booktitle = 	 {Data Acquisition and Analysis for Multimedia GIS},
  editor =	 {Mussio, L. and Forlani, G. and Crosilla, F.},
  series =	 {CISM Courses and Lectures No. 365},
  year =	 1996,
  organization = {International Centre for Mechanical Studies},
  publisher =	 {Springer, Wien},
  pages =	 {411-421}
}