Sančanin, B., Penjišević, A., Simjanović, D., & Ranđelović, B. (2024). THE IMPORTANCE OF HIGHER EDUCATION INSTITUTIONS FOR IMPROVING KEY COMPETENCES IN THE 21ST CENTURY IN THE REPUBLIC OF SERBIA. Studies in Teaching and Education, 73(2), 203-216. https://asistent.ceon.rs/index.php/nasvas/article/view/51288