H. MAHMOOD A, اکرم, S. KARYAKOS R, رائد, H. SAADOON L, لمیاء. Solvability Conditions For A system Of Nonhomogenous Differntial Equations Of The First Order. EDUSJ [Internet]. 2008 Jun. 1 [cited 2025 Aug. 4];21(2):150-4. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/18404