@inbook { WBJ*:2003,
	title = {Hierarchical Spline Approximations},
	booktitle = {Hierarchical and Geometrical Methods in Scientific Visualization},
	year = {2003},
	pages = {63-88},
	publisher = {Springer},
	organization = {Springer},
	address = {Berlin, Germany},
	author = {Wiley, D.F. and Bertram, M. and Jordan, B.W. and Bernd Hamann and Joy, K. and Max, N.L. and Gerik Scheuermann},
	editor = {Farin, G. and Bernd Hamann and Hans Hagen}
}
