1. Korovkin-Type Approximation Theory and its Applications;Altomare,1994
2. F. Altomare, M. Cappelletti Montano, V. Leonessa, I. Raşa, Elliptic differential operators and positive semigroups associated with generalized Kantorovich operators, submitted for publication.
3. Markov Operators, Positive Semigroups and Approximation Processes;Altomare,2014
4. A generalization of Kantorovich operators for convex compact subsets;Altomare;Banach J Math. Anal,2017
5. Inequalities;Levin;Amer. Math. Soc. Transl. Ser. 2,1960