Wu, R., Guan, Y., Wei, C., & Cui, N. (2018). Fixed-Time Disturbance Observer Based Nonsingular Fast Terminal Sliding Mode Guidance with Impact Angle Constraint. 2018 IEEE CSAA Guidance, Navigation and Control Conference (CGNCC), CSAA Guidance, Navigation and Control Conference (CGNCC), 2018 IEEE, 1-6. https://doi.org/10.1109/GNCC42960.2018.9018640

Wu, Rong, Yingzi Guan, Changzhu Wei, and Naigang Cui. "Fixed-Time Disturbance Observer Based Nonsingular Fast Terminal Sliding Mode Guidance with Impact Angle Constraint." 2018 IEEE CSAA Guidance, Navigation and Control Conference (CGNCC), CSAA Guidance, Navigation and Control Conference (CGNCC), 2018 IEEE 2018: 1-6. https://doi.org/10.1109/GNCC42960.2018.9018640.

Wu, Rong, et al. "Fixed-Time Disturbance Observer Based Nonsingular Fast Terminal Sliding Mode Guidance with Impact Angle Constraint." 2018 IEEE CSAA Guidance, Navigation and Control Conference (CGNCC), CSAA Guidance, Navigation and Control Conference (CGNCC), 2018 IEEE, 2018, pp. 1-6, https://doi.org/10.1109/GNCC42960.2018.9018640.