http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
by Jean-Claude Maire, Ulrich Krüerke, Marlis Mirbach, Wolfgang Petz, Christa Siebert ; edited by Ulrich Krüerke, Marlis Mirbach, Wolfgang Petz, Christa Siebert.
Gmelin handbook of inorganic and organometallic chemistry