URN:NBN:SI:doc-XTL0KO8K1973Oblak, Francidocuments/doc/X/URN_NBN_SI_doc-XTL0KO8K_001.pdfdocuments/doc/X/URN_NBN_SI_doc-XTL0KO8K_001.txt12articlestr. 77-800351-66526799449URN:NBN:SI:doc-XTL0KO8KslvDruštvo matematikov, fizikov in astronomov SlovenijePresekInC