An approximate dynamic programming approach to convex quadratic knapsack problems
Computers and Operations Research
Operations Research Letters
Quadratic resource allocation with generalized upper bounds
Operations Research Letters
Exact solution of a class of nonlinear knapsack problems
Operations Research Letters
A note on a general non-linear knapsack problem
Operations Research Letters
A surrogate relaxation based algorithm for a general quadratic multi-dimensional knapsack problem
Operations Research Letters
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This paper discusses a class of nonlinear knapsack problems where the objective function is quadratic. The method is a branch and search procedure which includes an efficient algorithm to find the continuous (relaxed) solution and a reduction rule which computes tight lower and upper bounds on the integer variables.