1. Observatório Nacional (ON/MCT), Rio de Janeiro, Brazil;
2. Observatório Nacional (ON/MCT) and ÇOMU, Department of Geophysics Engineering, Çanakkale, Turkey;
3. Petronas Research, Bangi, Malaysia/Petroleum Institute Abu Dhabi, UAE;
4. Instituto Nacional de Pesquisas Espaciais – INPE/MCT, Brazil;
5. Universidade de Brasília - UnB, Brazil