Cheaper relaxation and better approximation for multi-ball constrained quadratic optimization and extension. - Zhuoyi Xu; Yong Xia 002; Jiulin Wang (J. Glob. Optim., 2021)

A partial ellipsoidal approximation scheme for nonconvex homogeneous quadratic optimization with quadratic constraints. - Zhuoyi Xu; Linbin Li; Yong Xia 002 (Math. Methods Oper. Res., 2023)