pid type title authors mentors source_title published_date url doi isbn issn eissn pmf:6511 "journal article" "Transmission electron microscopy, x-ray diffraction and Raman scattering studies of nanophase TiO_2" "Turković, Aleksandra; Tonejc, Anđelka; Popović, Stanko; Dubček, Pavo; Ivanda, Mile; Musić, Svetozar; Gotić, Marijan"