Weerakamhaeng Y. On the Study of Nyquist Contour Handling Sampled-Data Control System Real Poles and Zeros. Sci Tech Asia [internet]. 2016 Nov. 30 [cited 2025 Apr. 5];21(4):66-80. available from: https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/72012