1. Department of Chemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Studentski trg 12-16, Belgrade, Serbia
2. Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Facultat de Ciències, 17003 Girona, Spain
3. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
4. University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, Belgrade, Serbia