pid type title authors mentors source_title published_date url doi isbn issn eissn pmf:13180 "journal article" "Metric perturbations in noncommutative gravity" "Herceg, Nikola; Jurić, Tajron; Samsarov, Andjelo; Smolić, Ivica" pmf:13459 "journal article" "Gravitational probe of quantum spacetime" "Herceg, Nikola; Jurić, Tajron; Samsarov, Anđelo; Smolić, Ivica; Gupta, Kumar S." pmf:10275 thesis "Hopfove algebre u fizici" "Herceg, Nikola"