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A heuristic algorithm for a pseudo-cyclic delivery problem under window constraints
Palleta, Giuseppe, (1987)
Solving 0-1 integer programming problems arising from large scale planning models
Johnson, Ellis L., (1985)
A new Lagrangian relaxation approach to the generalized assignment problem
Jörnsten, Kurt, (1986)
On preparation of Poland´s regions to knowledge-based economy
Walukiewicz, Stanislaw, (2002)
Some aspects of integer programming duality
Walukiewicz, Stanislaw, (1981)
Exact methods for the knapsack problem and its generalizations
Dudzinski, Krzysztof, (1987)