1. Using stochastic processes for studying Bernstein-type operators;Adell;Rend. Circ. Mat. Palermo (2) Suppl.,1993
2. Bernstein-type operators diminish the Φ-variation;Adell;Constr. Approx.,1996
3. Stochastic orders and preservation properties by Bernstein-type operators;Adell;Adv. in Appl. Probab.,1999
4. Markov Operators, Positive Semigroups and Approximation Processes;Altomare,2014