Zapryanova, Teodora Dimova A Characterization of the K-Functional for the Algebraic Version of the Trigonometric Jackson Integrals Gs, n in Generalized Weighted Integral Metric,
Springer Publ., 2022, pp. 119-129. - (PROMS ; Vol. 488), ISSN 2194-1009 (print) ; 2194-1017 (online); 978-3.