@inproceedings{inproceedings42e45adf,
title   = {An attempt for an Amazon geoid model using Helmert gravity anomaly},
author = {Blitzkow, Denizar and Matos, A. C. O. C. and Campos, I. O. and Ellmann, A. and Vanicek, P. and Santos, M. C.},
year = {2009},
publisher = {Springer-Verlag},
booktitle   = {IAG General Assembly}
}