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Kevin Broughan, Nan Zhu, An Integer Programming Problem with a Linear Programming Solution, The American Mathematical Monthly, Vol. 107, No. 5 (May, 2000), pp. 444-446 ...
Mauricio G. C. Resende, K. G. Ramakrishnan, Zvi Drezner, Computing Lower Bounds for the Quadratic Assignment Problem with an Interior Point Algorithm for Linear ...