HILČENKO, SLAVOLJUB, and NEBOJŠA JAKOVLJEVIĆ. “Interactive-Multimedia Playful Game Sheets and Panels for Preschool Institutes”. Journal of Education, Technology and Computer Science 19, no. 1 (March 30, 2017): 228–234. Accessed June 19, 2025. https://journals.ur.edu.pl/jetacomps/article/view/6174.