Approximation Properties of the Generalized Abel-Poisson Integrals on the Weyl-Nagy Classes. - Inna Kal'chuk; Yurii Kharkevych (Axioms, 2022)

On the Realization of Exact Upper Bounds of the Best Approximations on the Classes H1,1 by Favard Sums. - Dmytro Bushev; Inna Kal'chuk (Axioms, 2023)

Approximation of Functions of the Classes CβψHα by Linear Methods Summation of Their Fourier Series. - Yurii Kharkevych; Inna Kal'chuk (Axioms, 2023)

Theory of Functions and Applications. - Inna Kal'chuk (Axioms, 2024)