Strasser, W., Rau, R., Klein, R., Rau, R., Strasser, W., Klein, R., & Rau, R. (1997). Geometric modeling: Theory and practice: the state of the art. Berlin New York: Springer.

Strasser, Wolfgang, Rene Rau, Reinhard Klein, Ren Rau, Wolfgang Strasser, Reinhard Klein, and Rene Rau. Geometric Modeling: Theory and Practice: The State of the Art. Berlin New York: Springer, 1997.

Strasser, Wolfgang, et al. Geometric Modeling: Theory and Practice: The State of the Art. Berlin New York: Springer, 1997.