Serdyuk, A. S., and I. V. Sokolenko. “Approximation by Interpolation Trigonometric polynomials in Metrics of the Spaces $L_p$ on the Classes of Periodic Entire Functions”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 71, no. 2, Feb. 2019, pp. 283-92, https://umj.imath.kiev.ua/index.php/umj/article/view/1438.