Elguja R. Kutelia and Teimuraz Dzigrashvili, Republic Center for Structure Researches of Georgian Technical University; Nugzar Khidasheli, Gocha Beradze, and David Butskhrikidze, Georgian Technical University; Sayavur Bakhtiyarov, New Mexico Institute of Mining and Technology; Aydin Qafarov, Ahad Janahmadov, and Yusif Hasanov, Azerbaijan Technical University