1.
Hojeen M. Haji, Raad N. Butris, Hezha H. Abdulkareem, Dlovan H. Omar. Periodic Solution for Nonlinear Second Order Differential Equation System. TURCOMAT [Internet]. 2022Aug.13 [cited 2024Dec.27];13(03):324-3. Available from: https://turcomat.org/index.php/turkbilmat/article/view/12968