Udovenko, Maksym, Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Defence of Ukraine
Ugwu, Johnson Obunwa, School of Science, Engineering and Design, Teesside University, United Kingdom
Ugwueze, Charles, Department of Geology, University of Port Harcourt, Port Harcourt, Nigeria
ullah, Hadayat, Hazara University Mansehra Pakistan
Ullah, Sami, Institute of Geology, University of the Punjab Lahore, 54590 Pakistan

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