Lower bounds of concurrence for N-qubit systems and the detection of k-nonseparability of multipartite quantum systems. - Xianfei Qi; Ting Gao; Fengli Yan (Quantum Inf. Process., 2017)

The verification of a requirement of entanglement measures. - Xianfei Qi; Ting Gao; Fengli Yan (Quantum Inf. Process., 2021)