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A deterministic inventory-production model with general inventory cost rate function and piecewise linear concave production costs
Bayındır, Z.P., (2007)
An Elementary Proof of the Fritz-John and Karush-Kuhn-Tucker Conditions in Nonlinear Programming
Birbil, S.I., (2005)
A Note on the Dual of an Unconstrained (Generalized) Geometric Programming Problem
Frenk, J.B.G., (2005)