De la Sen, M. “Stabilization of Continuous-Time Adaptive Control Systems With Possible Input Saturation through a Controllable Modified Estimation Model”. Nonlinear Analysis: Modelling and Control 9, no. 1 (January 25, 2004): 3–37. Accessed July 3, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/15167.