Xing, Jinsheng. “Adaptive Hybrid Function Projective Synchronization of Chaotic Systems With Fully Unknown Periodical Time-Varying Parameters”. Nonlinear Analysis: Modelling and Control 18, no. 1 (August 20, 2019): 112–128. Accessed July 28, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/14036.