http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of a symposium, June 17-19, 1991, Denver, Colorado
International Symposium on Advanced Train Control 1991 : Denver, Colo.)
"First International Symposium on Advanced Train Control ... sponsored by the Association of American Railroads, the Railway Progress Institute, and the Transportation Research Board of the National Research Council."
Transportation research record ; no. 1314