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Tabu search for a class of scheduling problems
Mooney, E.L., (1993)
VALID INEQUALITIES AND PROJECTING MULTICOMMODITY EXTENDED FORMULATION FOR UNCAPACITATED FIXED CHARGE NETWORK FLOW PROBLEMS.
RARDIN, R.L., (1990)
Valid inequalities and projecting the multicommodity extended formulation for uncapacitated fixed charge network flow problems
Rardin, R.L., (1993)