Leiva, H., W. Zouhair, M. N. . Entekhabi, and E. Lucena. “Approximate Controllability of Semilinear Heat Equation With Noninstantaneous Impulses, Memory, and Delay”. Contemporary Mathematics, vol. 5, no. 3, Aug. 2024, pp. 3551-63, doi:10.37256/cm.5320242491.