Chuman, Tadchanon, and Suchin Arunsawatwong. 2014. “Criterion of Approximation for Designing 2 × 2 Feedback Systems With Inputs Satisfying Bounding Conditions”. ECTI Transactions on Electrical Engineering, Electronics, and Communications 13 (1):1-10. https://doi.org/10.37936/ecti-eec.2015131.170968.