Department of Physics, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, USA
Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
Copyright © 2015 Jefferson F. D. F. Araujo, Joao M. B. Pereira et al. This is
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