DIN SPEC 1135
DIN SPEC 1135 Geographic information - Metadata - XML schema implementation (ISO/TS 19139:2007); German version CEN ISO/TS 19139:2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2010
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2010