URN:NBN:SI:doc-BS8DOE3F1980Pisanski, TomažRojko, Romandocuments/doc/B/URN_NBN_SI_doc-BS8DOE3F_001.pdfdocuments/doc/B/URN_NBN_SI_doc-BS8DOE3F_001.txt18articlestr. 4-50351-66528252505URN:NBN:SI:doc-BS8DOE3FslvDruštvo matematikov, fizikov in astronomov SlovenijePresekInCcombinatoricskombinatorikamatematikamathematicsrecreational mathematicsrekreacijska matematikazanimiva matematika