@inproceedings{inproceedings12de482a,
title   = {Geomagnetic secular variation in South America for the past few millennia},
author = {Hartmann, Gelvam and Trindade, Ricardo Ivan Ferreira da and Terra-Nova, Filipe and Poletti, Wilbor},
year = {2013},
publisher = {American Geophysical Union},
booktitle   = {American Geophysical Union Annual Fall Meeting}
}