Al-Hawasy jamil A, Abd Alsatar Hassan M. The Optimal Classical Continuous Control Quaternary Vector of Quaternary Nonlinear Hyperbolic Boundary Value Problem. IHJPAS [Internet]. 2022 Jul. 20 [cited 2024 Sep. 1];35(3):161-74. Available from: https://jih.uobaghdad.edu.iq/index.php/j/article/view/2833