Convexity of the Joint Numerical Range. - Chi-Kwong Li; Yiu-Tung Poon (SIAM J. Matrix Anal. Appl., 2000)

Eigenvalues of the Sum of Matrices from Unitary Similarity Orbits. - Chi-Kwong Li; Yiu-Tung Poon; Nung-Sing Sze (SIAM J. Matrix Anal. Appl., 2008)

Least-squares approximation by elements from matrix orbits achieved by gradient flows on compact lie groups. - Chi-Kwong Li; Yiu-Tung Poon; Thomas Schulte-Herbrüggen (Math. Comput., 2011)

Higher Rank Numerical Ranges of Normal Matrices. - Hwa-Long Gau; Chi-Kwong Li; Yiu-Tung Poon; Nung-Sing Sze (SIAM J. Matrix Anal. Appl., 2011)

Recovery in quantum error correction for general noise without measurement. - Chi-Kwong Li; Mikio Nakahara; Yiu-Tung Poon; Nung-Sing Sze; Hiroyuki Tomita (Quantum Inf. Comput., 2012)

Maximal noiseless code rates for collective rotation channels on qudits. - Chi-Kwong Li; Mikio Nakahara; Yiu-Tung Poon; Nung-Sing Sze (Quantum Inf. Process., 2015)

Error correction schemes for fully correlated quantum channels protecting both quantum and classical information. - Chi-Kwong Li; Seth Lyles; Yiu-Tung Poon (Quantum Inf. Process., 2020)