URN:NBN:SI:doc-SG9MPX0I2013Požar, Rokdocuments/casopisje/ars-mathematica-contemporanea/1024540756a.pdfdocuments/doc/S/URN_NBN_SI_doc-SG9MPX0I_001.pdfdocuments/doc/S/URN_NBN_SI_doc-SG9MPX0I_001.txt26articlestr. 393-40810245407561855-3966URN:NBN:SI:doc-SG9MPX0IengDruštvo matematikov, fizikov in astronomov SlovenijeArs mathematica contemporaneaBYcovering projectiongraphgroup extensionlifting automorphismsteorija grafovvoltage assignmentSectional split extensions arising from lifts of groups