A Classical Paper :The Cutting Stock Problem
P.C. Gilmore & R.E. Gomory
A Linear Programming Approach to the Cutting Stock Problem.
Oper. Res. 9, 849-859. (1960)
: number of times item i is requested
: length of a standard roll
: set of cutting patterns
: number of times item i is cut in pattern j
: number of times pattern j is used