ABDALLA NS. Functional Differential Equation of First Order with Riemann-Stieltjes Integral and Infinite Point Nonlocal Conditions. edujournal [انترنت]. 10 يناير، 2023 [وثق 4 مايو، 2024];2(1):14-28. موجود في: https://journal.su.edu.ly/index.php/edujournal/article/view/552