Akhazhanov, S., G. Tleulenova, S. Karaulov, S. Zharassov, and A. Mukhamejan. “Age-Dependent Trends in Compressive Strength of Concrete Incorporating Fly Ash”. Technobius, vol. 3, no. 4, Nov. 2023, p. 0046, doi:10.54355/tbus/3.4.2023.0046.