ČEKANOVÁ, Katarína - PAULIKOVÁ, Alena - RUSKO, Miroslav. Sustainable development - a methodology of assessing the level of implementation of principles sustainable development at technical universities in Slovakia. In Interdisciplinarity in theory and practice : journal for presentation of interdisciplinary approaches in various fields. - Arad : Adoram, 2017. ISSN 2344-2409, 2017, no. 12, pp. 27–34 online. VEGA 1/0990/15.