@article{GoulHribNoce01,
 author         = {N. I. M. Gould and M. E. Hribar and J. Nocedal},
 title          = {On the solution of equality constrained quadratic problems
                   arising in optimization},
 journal        = SISC,
 volume         = 23, number = 4, pages = {1375--1394}, year = 2001}