Igenberlina А., and Keulimzhayeva Ж. “THE DYADIC INTEGRAL MODULE OF CONTINUITY AND BEST APPROXIMATIONS OF A FUNCTION OF MULTIPLE VARIABLES BY WALSH POLYNOMIALS”. Bulletin of Abai KazNPU. Series of Physical and Mathematical sciences 79, no. 3 (September 27, 2022): 24–31. Accessed December 15, 2025. https://bulletin-phmath.kaznpu.kz/index.php/ped/article/view/956.