BENGA, Gheorghe. “PETRE T. FRANGOPOL (1933-2020). ROMANIAN ACADEMIC, SCIENTIST, MENTOR AND FRIEND”. Studia Universitatis Babeș-Bolyai Chemia, vol. 66, no. 3, Sept. 2021, pp. 9-17, https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/7836.