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…Systems" International Journal of Control, vol. 58, number 6, November 1993, pp. 1469-1476. Vian, J.L. and M.E. Sawan, "H-infinity Control for a Singularly Perturbed Aircraft Model", Journal of Optimal Control Applications & Methods, vol. 15, pp.277-289, July 1994. H. Shao and M. E. Sawan, "Sensitivity Analysis for Systems with Structured Uncertainty", …
https://www.wichita.edu/profiles/academics/engineering/ECE/02_Emeritus/Sawan-M.php