H. Hu

Positive definite constrained least-squares estimation of matrices

H. Hu, 1995 .

A numerical procedure for finding the positive definite matrix closest to a patterned matrix

I. Olkin, H. Hu, 1991 .

A Projection Method for Solving Infinite Systems of Linear Inequalities

H. Hu, H. Hu, H. Hu, 1994 .