1.
Hassan Mahmood A, اکرم, Ahmed Mohamed A, علاء. Investigation of solvability condition for sixth-order boundary value problem. EDUSJ [Internet]. 2012 Jun. 1 [cited 2025 Aug. 4];25(2):70-5. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17857