Using MILP Tools to Study R&D Portfolio Selection Model for Large Instances in Public and Social Sector. - Igor S. Litvinchev; Fernando López Irarragorri; Miguel Mata Pérez; Satu Elisa Schaeffer (Computación y Sistemas, 2008)

Lagrangian heuristic for a class of the generalized assignment problems. - Igor S. Litvinchev; Miguel Mata Pérez; Socorro Rangel; Jania Saucedo (Comput. Math. Appl., 2010)