Turgumbaev, M., Suleimenova, Z., & Mukhambetzhan, M. (2024). On conditions for the weighted integrability of the sum of the series with monotonic coefficients with respect to the multiplicative systems. Bulletin of the Karaganda University. Mathematics Series, 114(2), 197–210. https://doi.org/10.31489/2024m2/197-210