On the variation detracting property of a class of operators. - Octavian Agratini (Appl. Math. Lett., 2006)

Linear operators that preserve some test functions. - Octavian Agratini (Int. J. Math. Math. Sci., 2006)

On the iterates of a class of summation-type linear positive operators. - Octavian Agratini (Comput. Math. Appl., 2008)

An extension based on qR-integral for a sequence of operators. - Octavian Agratini; Cristina Radu (Appl. Math. Comput., 2011)

On a generalization of Bleimann, Butzer and Hahn operators based on q-integers. - Octavian Agratini; Grzegorz Nowak (Math. Comput. Model., 2011)

On an approximation process of integral type. - Octavian Agratini (Appl. Math. Comput., 2014)

A sequence of positive linear operators associated with an approximation process. - Octavian Agratini (Appl. Math. Comput., 2015)

Asymptotic behaviour of Jain operators. - Ulrich Abel; Octavian Agratini (Numer. Algorithms, 2016)

On the Durrmeyer-Type Variant and Generalizations of Lototsky-Bernstein Operators. - Ulrich Abel; Octavian Agratini (Symmetry, 2021)

Asymptotic properties of Kantorovich-type Szász-Mirakjan operators of higher order. - Ulrich Abel; Octavian Agratini; Mircea Ivan (Math. Found. Comput., 2023)