http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Shell and Spatial Structures: Computational Aspects
Proceedings of the International Symposium July 1986, Leuven, Belgium
edited by G. Roeck, A. Samartin Quiroga, M. Laethem, E. Backx.