POP, Aurel. Foreword Anniversary of Professor Sorin Dan ANGHEL. Studia Universitatis Babeș-Bolyai Physica, [S. l.], v. 61, n. 2, p. 5–6, 2016. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbphysica/article/view/5850. Acesso em: 11 feb. 2025.