Helical polynomial curves and double Pythagorean hodographs II. Enumeration of low-degree curves.

Rida T. Farouki Carlotta Giannelli Alessandra Sestini Helical polynomial curves and double Pythagorean hodographs II. Enumeration of low-degree curves. 307-332 2009 44 J. Symb. Comput. 4 http://dx.doi.org/10.1016/j.jsc.2008.07.003 db/journals/jsc/jsc44.html#FaroukiGS09a