ŠPEHAR, Nina, 2015, Intangible investment as a source of competitive advantage in comparative perspective : the case of the EU and Slovenia [na spletu]. Magistrsko delo. Ljubljana : N. Špehar. [Dostopano 11 april 2025]. Pridobljeno s: http://www.cek.ef.uni-lj.si/magister/spehar1617-B.pdf