@inproceedings{inproceedingsfe0c1a72,
title   = {Secular variation and the existence of topographic MHD waves in the core},
author = {Silva, Breno Raphaldini Ferreira da and Hartmann, Gelvam and Pacca, Igor Ivory Gil},
year = {2007},
publisher = {Observatório Nacional},
booktitle   = {Latin American School of Geomagnetism "Luiz Muniz Barreto"}
}