http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
mathematical and physical aspects proceedings of the NATO Advanced Research Workshop on Defects, Singularities and Patterns in Nematic Liquid Crystals: Mathematical and Physical Aspects, Orsay, France, May 28 - June 1, 1990
edited by Jean-Michel Coron, Jean-Michel Ghidaglia and Frederic Helein
NATO ASI series : Series C: Mathematical and physical sciences 332