The following publications are possibly variants of this publication:
- Helical polynomial curves and double Pythagorean hodographs I. Quaternion and Hopf map representationsRida T. Farouki, Carlotta Giannelli, Alessandra Sestini. JSC, 44(2):161-179, 2009. [doi]
- Polynomial and Rational Pythagorean-Hodograph Curves ReconciledRida T. Farouki, Helmut Pottmann. ima-ms 1996: 355-378
- Pythagorean-hodograph space curvesRida T. Farouki, Takis Sakkalis. adcm, 2(1):41-66, 1994. [doi]
- Pythagorean-Hodograph CurvesRida T. Farouki. In Gerald E. Farin, Josef Hoschek, Myung-Soo Kim, editors, Handbook of Computer Aided Geometric Design. pages 405-427, North-Holland, 2002. [doi]
- Rational Pythagorean-hodograph space curvesRida T. Farouki, Zbynek Sír. cagd, 28(2):75-88, 2011. [doi]
- Pythagorean-hodograph curves and related topicsRida T. Farouki, Bert Jüttler, Carla Manni. cagd, 25(4-5):203-204, 2008. [doi]