1. Barton, C. E., , R., Hutchinson, , P., Quilty, , K., Seers, , T., Stone, , Quest for the magnetic poles: Relocation of the South Magnetic Pole at sea, 1986, BMR Record 1987/3, Australian Geological Survey Organisation, Canberra, 1987,
2. The position of the North Magnetic Dip Pole in 1994;Newitt;J. Geomag. Geoelectr.,1996