(1)
Al-Qaisi, S. J. .; Kadhem, G. M. .; Al-Hawasy, J. A. . . Mixed Optimal Control Vector for a Boundary Value Problem of Couple Nonlinear Elliptic Equations. Iraqi Journal of Science 2022, 63 (9), 3861-3866. https://doi.org/10.24996/ijs.2022.63.9.18.