Approximation properties of a new type Bernstein-Stancu polynomials of one and two variables. - A. D. Gadjiev; A. M. Ghorbanalizadeh (Appl. Math. Comput., 2010)

Approximation of analytical functions by sequences of k-positive linear operators. - A. D. Gadjiev; A. M. Ghorbanalizadeh (J. Approx. Theory, 2010)