@article {SC.4.Daehlen.1991,
	title = {Good Approximation of Circles by Curvature-Continuous B{\'e}zier Curves},
	journal = {Computer Aided Geometric Design},
	year = {1991},
	pages = {33-41,},
	author = {Dokken, T. and D{\ae}hlen, Morten and Lyche, T. and M{\o}rken, Knut}
}
