Alsaban, A. A., H. M. Serag, and L. Abdelrhman. “Distributed Control for Non-Cooperative Systems Under Conjugation Conditions”. Journal of Progressive Research in Mathematics, Vol. 18, no. 1, Mar. 2021, pp. 55-63, http://scitecresearch.com/journals/index.php/jprm/article/view/2022.