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M. Raghavachari, On Connections between Zero-One Integer Programming and Concave Programming under Linear Constraints, Operations Research, Vol. 17, No. 4 (Jul. - Aug ...
George B. Dantzig, Upper Bounds, Secondary Constraints, and Block Triangularity in Linear Programming, Econometrica, Vol. 23, No. 2 (Apr., 1955), pp. 174-183 ...