H BartelsRichard

Hierarchical B-spline refinement

R ForseyDavid, H BartelsRichard, 1988 .

Interpolating splines with local tension, continuity, and bias control

H BartelsRichard, H U KochanekDoris, 1984 .

The definition, editing, and contouring of surfaces for the analysis of field problems

H BartelsRichard, R DickinsonRobert, 1986 .