A cautious BFGS update for reduced Hessian SQP. - Tao-Wen Liu; Dong-Hui Li (Numer. Algorithms, 2007)

A practical update criterion for SQP method. - Tao-Wen Liu; Dong-Hui Li (Optim. Methods Softw., 2007)

A reduced Hessian SQP method for inequality constrained optimization. - Tao-Wen Liu (Comput. Optim. Appl., 2011)

A regularized limited memory BFGS method for nonconvex unconstrained minimization. - Tao-Wen Liu (Numer. Algorithms, 2014)