Stanković Elesini, Urška, and Grega Tomažin. “Analysis of E-Textbooks: Development, Use and Availability on the Slovenian Market”. Journal of Graphic Engineering and Design 9, no. 1 (June 1, 2018): 11–21. Accessed July 5, 2024. https://jged.uns.ac.rs/index.php/jged/article/view/492.