Idowu, B. A. A., Vincent, U. E. E., & Njah, A. N. N. (2009). Generalized Adaptive Backstepping Synchronization for Non-Identical Parametrically Excited Systems. Nonlinear Analysis: Modelling and Control, 14(2), 165-176. https://doi.org/10.15388/NA.2009.14.2.14519