Minimizing a Sum of Norms Subject to Linear Equality Constraints. - Knud D. Andersen; Edmund Christiansen (Comput. Optim. Appl., 1998)

Computing Limit Loads by Minimizing a Sum of Norms. - Knud D. Andersen; Edmund Christiansen; Michael L. Overton (SIAM J. Sci. Comput., 1998)

An Efficient Primal-Dual Interior-Point Method for Minimizing a Sum of Euclidean Norms. - Knud D. Andersen; Edmund Christiansen; Andrew R. Conn; Michael L. Overton (SIAM J. Sci. Comput., 2000)