@inproceedings{inproceedingsef4889c4,
title   = {Geomagnetic secular variation in Brazil revealed from archeological materials and lacustrine sediments},
author = {Hartmann, Gelvam and Savian, Jairo F and Poletti, Wilbor and Trindade, Ricardo Ivan Ferreira da},
year = {2015},
publisher = {American Geophysical Union},
booktitle   = {2015 AGU Joint Assembly}
}