Nekrep, A., Strašek, S. in Boršič, D. (2018) „Productivity and Economic Growth in the European Union: Impact of Investment in Research and Development“, Naše gospodarstvo/Our economy, 64(1), str. 18–27. Dostopno na: https://old.journals.um.si/index.php/oe/article/view/2189 (Pridobljeno: 24 november 2025).