1. Faculty of Metallurgy and Technology , Džordža Vašingtona bb, University of Montenegro , Podgorica , Montenegro
2. Department of Theoretical Physics and Condensed Matter Physics , ‘VINČA’ Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade , PO Box 522 , 11001 , Belgrade , Serbia
3. Institut für Mineralogie und Kristallographie, Universität Wien - Geozentrum , Althanstraße 14 , 1090 , Wien , Austria
4. Veterinary Faculty , University of Sarajevo Zmaja od Bosne , 90 71000 , Sarajevo , Bosnia and Herzegovina