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SPEAKERSAbdon ATANGANA : Free State University,South Africa https://scholar.google.com/citations?user=U3LfJ2MAAAAJ Dumitru BALEANU : Cankaya University, Ankara Turkey and Institute of Space Science Bucharest, Romania https://scholar.google.com/citations?user=EFO9iO4AAAAJ&hl=en |