K. Gomboc, „Back to Nature: Exploring the Potential for Implementing the Norwegian Idea of Outdoor Days in the Slovenian School System“, REI, let. 9, št. 4, str. 123–138, dec. 2016, Pridobljeno: jul. 12, 2026. Dostopno na: https://journals.um.si/index.php/education/article/view/345