Maximizing the sum of a generalized Rayleigh quotient and another Rayleigh quotient on the unit sphere via semidefinite programming. - Van-Bong Nguyen; Ruey-Lin Sheu; Yong Xia 002 (J. Glob. Optim., 2016)

An SDP approach for quadratic fractional problems with a two-sided quadratic constraint. - Van-Bong Nguyen; Ruey-Lin Sheu; Yong Xia 002 (Optim. Methods Softw., 2016)

Strong duality in minimizing a quadratic form subject to two homogeneous quadratic inequalities over the unit sphere. - Van-Bong Nguyen; Thi Ngan Nguyen; Ruey-Lin Sheu (J. Glob. Optim., 2020)