7Danish Library of Congress' Network Development and MARC Standards Offlce. ISO/CD25577 Information and documentation MarcXchange [S/OL]2006- 10 - 30 [2007 - 01 - 15 ]. http://www. bs.dk/MarcXchange/index.htm.
8Danish Library of Congress' Network Development and MARC Standards Office. MARCXML MARC 21 XML Schema[ EB/OL] (2006 - 7 - 26) [ 2007 -01 - 15 ] http://www. loc. gov/standards/marcxml/.
9Danish Library of Congress' Network Development and MARC Standards Office.ISO/CD25577 Information and documentation MarcXchange[S/OL] 2006-10-30[2007-01-15].http://www.bs.dk/MarcXchange/index.htm
10Danish Library of Congress' Network Development and MARC Standards Office.MARCXML MARC 21 XML Schema[EB/OL](2006-7-26)[2007-01-15] http://www.loc.gov/standards/marcxml/