1. Polynomial algorithms for Lagrangean relaxations in combinatorial problems;Aneja;University of Windsor, Faculty of Business, Working Paper Series No. W91-03, ISSN No. 0714-6191,1991
2. Lagrangean relaxation of certain constrained NP-hard combinatorial problems;Aneja,1994
3. Ratio combinatorial programs;Aneja;Europ. J. Oper. Res.,1995
4. Maximizing concave functions in fixed dimensions;Cohen,1993
5. Equivalence of ε-approximate separation and optimization in fixed dimensions;Kabadi,1994