EL-Sayed A.M.A, Eman Hamdallah and Ebead H.R 2020. Positive solutions of an initial value problem of a delay-self-reference nonlinear differential equation. Malaya Journal of Matematik. 8, 03 (Jul. 2020), 1001–1006. DOI:https://doi.org/10.26637/MJM0803/0046.