EL-SAYED A.M.A; EMAN HAMDALLAH; EBEAD H.R. Positive solutions of an initial value problem of a delay-self-reference nonlinear differential equation. Malaya Journal of Matematik, India, v. 8, n. 03, p. 1001–1006, 2020. DOI: 10.26637/MJM0803/0046. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1548. Acesso em: 4 nov. 2024.