Chih-Jer Lin Shyi-Kae Yang Her-Terng Yau Chaos suppression control of a coronary artery system with uncertainties by using variable structure control. 988-995 2012 64 Comput. Math. Appl. 5 https://doi.org/10.1016/j.camwa.2012.03.007 db/journals/cma/cma64.html#LinYY12