K-memory-embedded insertion mechanism for opacity enforcement. - Rongjian Liu; Liujuan Mei; Jianquan Lu (Syst. Control. Lett., 2020)

Matrix Approach for Verification of Opacity of Partially Observed Discrete Event Systems. - Liujuan Mei; Rongjian Liu; Jianquan Lu; Jianlong Qiu (Circuits Syst. Signal Process., 2021)