Ramazi, H. R., Dep. of Mining & Metallurgical Eng., Amirkabir University of Technology, Tehran, Iran
Ramishvili, Giorgi, 1. School of Natural Sciences and Medicine, Ilia State University, Tbilisi 0162, Georgia; 2. Sun and Solar System Department, Georgian Evgeni Kharadze National Astrophysical Observatory, Tbilisi 0162, Georgia
Raza, Hassan, Department of Earth Sciences, Quaid-i-Azam University, Islamabad, Pakistan
Raza, Hassan, Department of Earth Sciences, Quaid-i-Azam University, Islamabad, Paksitan
Riera, Jorge Daniel, UFRGS: Federal University of Rio Grande do Sul

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