@InCollection{jue:08f,
  author = 	 {S.\ Chau and M.\ Oberneder and A.\ Galligo and B.\ J\"uttler},
  title = 	 {Intersecting biquadratic surface patches},
  publisher = 	 {Springer},
  booktitle = 	 {Algebraic Geometry and Geometric Modeling},
  editor = {R. Piene and B. J\"uttler},
  year =	 {2008},
  pages= {161-180}
}