pid type title authors mentors source_title published_date url doi isbn issn eissn pmf:5783 dissertation "Dinamika neautonomnoga Frenkel-Kontorovina modela" "Rabar, Braslav" pmf:5784 dissertation "Fractal analysis of unbounded sets in Euclidean spaces and Lapidus zeta functions" "Radunović, Goran"