Martin Aigner, Bert Jüttler, Zbynek Sir,
"Least-Squares Approximation by Pythagorean Hodograph Spline curves via an Evolution Process"
, in M.-S. Kim and K. Shimada : Geometric Modelling and Processing, Vol. LNCS 4077, Springer, Seite(n) 45 - 58, 2006
Original Titel:
Least-Squares Approximation by Pythagorean Hodograph Spline curves via an Evolution Process