Gn∗-functional splines for interpolation and approximation of curves, surfaces and solids. - Jinggong Li; Josef Hoschek; Erich Hartmann (Comput. Aided Geom. Des., 1990)

Chapter 3: Functional Splines for Interpolation, Approximation, and Blending of Curves, Surfaces, and Solids. - Josef Hoschek; Erich Hartmann (Topics in Surface Modeling, 1992)

On the convexity of functional splines. - Erich Hartmann; Yu Yu Feng 001 (Comput. Aided Geom. Des., 1993)

Blending an implicit with a parametric surface. - Erich Hartmann (Comput. Aided Geom. Des., 1995)

G2 interpolation and blending on surfaces. - Erich Hartmann (Vis. Comput., 1996)

Numerical implicitization for intersection and Gn-continuous blending of surfaces. - Erich Hartmann (Comput. Aided Geom. Des., 1998)

A marching method for the triangulation of surfaces. - Erich Hartmann (Vis. Comput., 1998)

On the curvature of curves and surfaces defined by normalforms. - Erich Hartmann (Comput. Aided Geom. Des., 1999)

Gn-Blending with Rolling Ball Contact Curves. - Erich Hartmann (GMP, 2000)

Numerical parameterization of curves and surfaces. - Erich Hartmann (Comput. Aided Geom. Des., 2000)

Implicit Gn-blending of vertices. - Erich Hartmann (Comput. Aided Geom. Des., 2001)

Gn-continuous connections between normal ringed surfaces. - Erich Hartmann (Comput. Aided Geom. Des., 2001)

Parametric Gn blending of curves and surfaces. - Erich Hartmann (Vis. Comput., 2001)

The normalform of a space curve and its application to surface design. - Erich Hartmann (Vis. Comput., 2001)