URN:NBN:SI:doc-HX8L0W4W2010Graf, Lorenzdocuments/doc/H/URN_NBN_SI_doc-HX8L0W4W_001.pdfdocuments/doc/H/URN_NBN_SI_doc-HX8L0W4W_001.txt12articlestr. 129-1341855-931X513625474URN:NBN:SI:doc-HX8L0W4WengEdukatorAdvances in business related scientific research journalInCconeptualizationenvyjealousy