1. Approximation of circular arcs by Bézier curves;Ahn;J. Comput. Appl. Math.,1997
2. Approximation of circular arcs and offset curves by Bézier curves of high degree;Ahn;J. Comput. Appl. Math.,2004
3. Approximation of quadric surfaces using splines;Ahn;J. Korean Soc. Ind. Appl. Math.,2009
4. H. Chen, Quadric surfaces with rational biquadratic representation (Master’s Thesis), 2012. (in Chinese).
5. Applied Numerical Linear Algebra;Demmel,1997