K. Zajko in B. Bradač Hojnik, „Demand and Characteristics of Customers of Reusable Products in Slovenia“, OE, let. 65, št. 3, str. 63–72, jul. 2019, Pridobljeno: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/2155