@ARTICLE{LeTCYB2021,  
author={Chang, Le and Han, Qing-Long and Ge, Xiaohua and Zhang, Chenghui and Zhang, Xianfu},  
journal={IEEE Transactions on Cybernetics},   
title={On Designing Distributed Prescribed Finite-Time Observers for Strict-Feedback Nonlinear Systems},   
year={2021},  
volume={51},  
number={9},  
pages={4695-4706},  
doi={10.1109/TCYB.2019.2951067}
}