J. Mavrič, P. Tominc, in V. Bobek, „Gualitative Indicators for Measuring the Performance Development of selected Cities“, OE, let. 60, št. 3-4, str. 13–25, avg. 2014, Pridobljeno: avg. 26, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/2280