Biregular graphs with three eigenvalues. - Xi-Ming Cheng; Alexander L. Gavrilyuk; Gary R. W. Greaves; Jack H. Koolen (Eur. J. Comb., 2016)

Graham's pebbling conjecture on the middle graphs of even cycles. - Zheng-Jiang Xia; Yong-Liang Pan; Jun-Ming Xu 001; Xi-Ming Cheng (Ars Comb., 2017)

A generalization of a theorem of Neumaier. - Xi-Ming Cheng; Jack H. Koolen (Des. Codes Cryptogr., 2017)

Graphs with three eigenvalues and second largest eigenvalue at most 1. - Xi-Ming Cheng; Gary R. W. Greaves; Jack H. Koolen (J. Comb. Theory B, 2018)