1. Bartels, R. H., J. C. Beatty and B. A. Barsky (1987). An Introduction to Splines for Use in Computer Graphics and Geometric Modeling. Morgan Kaufmann, Los Altos.
2. Borns, D. J., J. H. Sass and R. A. Schweickert (1990). Proposed study of the Basin and Range from Death Valley to Yucca Flat. EOS Transactions-AGU, 71, 1012–1013.
3. de Boor, Carl (1978). A Practical Guide to Splines. Springer-Verlag, New York.
4. Fisher, T. R. and R. Q. Wales (1990a). 3D solid modeling of sandstone reservoirs using NURBS: a case study of Noonen Ranch field, Denver basin, Colorado. Geobyte, 5:1, 39–41.
5. Fisher, T. R. and R. Q. Wales (1990b). Three dimensional solid modeling of geo-objects using nonuniform rational B-splines (NURBS). In: Three-Dimensional Modeling with Geoscientific Information Systems (A. K. Turner, ed.). Kluwer Academic Publishers, Boston.