1. National School of Surveying; University of Otago; Dunedin New Zealand
2. Institute of Geodesy and Geophysics; School of Geodesy and Geomatics; Wuhan University; Wuhan China
3. Geomarine Research; Auckland New Zealand
4. Institut national de l'information géographique et forestière; direction technique; Saint-Mandé France
5. Institut de Physique du Globe de Paris; Etudes Spatiales et Planetologie; Paris France