@Article{jue:04b,
  author = 	 {E. Wings and B. J\"uttler},
  title = 	 {Generating Tool Paths on Surfaces for a Numerically Controlled Calotte Cutting System},
  journal = 	 {Computer-Aided Design},
  volume =       {36},
  year = 	 {2004},
  pages =        {325--331}
}