[3] Hamann, B. (1991), Visualization and Modeling Contours of Trivariate Functions, Ph.D. dissertation (advisor: Gregory M. Nielson), Arizona State Univeristy, Tempe, Arizona.

[4] Hamann, B. (1991), Visualization techniques for the representation of three-dimensional data sets (Visualisierungstechniken zur Darstellung dreidimensionaler Datenmengen) (pdf), in German, CAD Computergraphik 13(5), Austrian Computer Graphics Association, Vienna, Austria, pp. 129-139.

[5] Hamann, B., Farin, G. and Nielson, G.M. (1991), A parametric triangular patch based on generalized conics (pdf), in: Farin, G., ed., NURBS for Curve and Surface Design, SIAM, Philadelphia, Pennsylvania, pp. 75-85.

[6] Nielson, G.M., Foley, T.A., Hamann, B. and Lane, D.A. (1991), Visualizing and modeling scattered multivariate data (pdf), IEEE Computer Graphics and Applications 11(3), pp. 47-55.

[7] Nielson, G.M. and Hamann, B. (1991), The asymptotic decider: Resolving the ambiguity in marching cubes (pdf), in: Nielson, G.M. and Rosenblum, L.J., eds., IEEE Visualization '91, IEEE Computer Society Press, Los Alamitos, California, pp. 83-91.