@article{article8272f9b4,
title   = {Gravity map of brazil: 1. Representation of free-air and bouguer anomalies},
author = {Sá, Nelsi Côgo de and Ussami, Naomi and Molina, Eder Cassola},
year = {1993},
doi = {10.1029/92jb00979},
journal   = {Journal of Geophysical Research}
}