TETEAN, R. “Foreword: Anniversary of Professor Viorel POP”. Studia Universitatis Babeș-Bolyai Physica 66, no. 1-2 (December 30, 2021): 5–7. Accessed November 19, 2024. http://193.231.18.162/index.php/subbphysica/article/view/449.