Indefinitely preconditioned conjugate gradient method for large sparse equality and inequality constrained quadratic problems. - Carla Durazzi; Valeria Ruggiero (Numer. Linear Algebra Appl., 2003)

Numerical solution of special linear and quadratic programs via a parallel interior-point method. - Carla Durazzi; Valeria Ruggiero (Parallel Comput., 2003)