Approximate implicitization via curve fitting. - Elmar Wurm; Bert Jüttler (Symposium on Geometry Processing, 2003)

Approximate Rational Parameterization of Implicitly Defined Surfaces. - Elmar Wurm; Bert Jüttler; Myung-Soo Kim (IMA Conference on the Mathematics of Surfaces, 2005)

Approximate algebraic methods for curves and surfaces and their applications. - Bert Jüttler; Pavel Chalmovianský; Mohamed Shalaby; Elmar Wurm (SCCG, 2005)

Piecewise approximate implicitization: experiments using industrial data. - Mohamed Shalaby; Jan B. Thomassen; Elmar Wurm; Tor Dokken; Bert Jüttler (Algebraic Geometry and Geometric Modeling, 2006)