1. Helix splines as example of affine Tchebycheffian splines;Pottmann;Adv. Comput. Math.,1994
2. C-curves, an extension of cubic curves;Zhang;Comput. Aided Geometric Design,1996
3. Two different forms of CB-splines;Zhang;Comput. Aided Geometric Design,1997
4. Construction of exponential tension B-splines of arbitrary order;Koch,1991
5. J. Hoschek, D. Lasser, Fundamentals of Computer Aided Gerometric Design, A.K. Peters, 1993