SUNDARAPANDIAN, Vaidyanathan, and Karthikeyan RAJAGOPAL. 2011. “Anti-Synchronization of Tigan and Li Systems With Unknown Parameters via Adaptive Control”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 2 (1):17-28. https://doi.org/10.11121/ijocta.01.2012.0076.