References
Drefahl A: "Extraction and Application of Environmentally Relevant Chemical Information from the ThermoML Archive". EnviroInfo. 2007, Shaker Verlag GmbH, D-52018 Aachen, [http://www.axeleratio.com/cpv] 21st International Conference on Informatics for Environmental Protection September 12–14, 2007, Warsaw, Poland. Pages 71 to 78 in Volume 1: Plenary and session papers
Park Jack, (Ed): "XML Topic Maps". 2003, Addison-Wesley, Boston