The UCD1+ controlled vocabulary Version 1.23
Andrea Preite Martinez, S. Derrière, Nausicaa A. R. Delmotte, Norman Gray, Robert Mann, Jonathan C. McDowell, Thomas Mc Glynn, F. Ochsenbein, P. Osuna, Guy T. Rixon, Roy Williams · 2007
This document describes the list of controlled terms used to build the Unified Content Descriptors, Version 1+ (UCD1+). The document describing the UCD1+ can be found at the URL: http://www.ivoa.net/Documents/latest/UCD.html. This document reviews the structure of the UCD1+ and presents the current vocabulary.