GONSKA, H., HEILMANN, M. and RAȘA, I. (2016) “Eigenstructure of the genuine Beta operators of Lupaș and Mühlbach: Dedicated to Professor Gheorghe Coman on the occasion of his 80th anniversary”, Studia Universitatis Babeș-Bolyai Mathematica, 61(3), pp. 383–388. Available at: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5604 (Accessed: 5 February 2025).