COBZAȘ, S. “Francesco Altomare, Mirella Cappelletti Montano, Vita Leonessa, Ioan Rasa; Markov Operators, Positive Semigroups and Approximation Processes, De Gruyter Studies in Mathematics, Vol. 61, Walter De Gruyter, Berlin, 2014, Xi+ 313 Pp. ISBN 978-3-11-037274-8 ”. Studia Universitatis Babeș-Bolyai Mathematica, vol. 60, no. 3, Sept. 2015, pp. 487-8, https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5813.