@article{oai:barrel.repo.nii.ac.jp:00001170,
 author = {Iida, Hiroshi},
 issue = {1},
 journal = {商学討究},
 month = {Jul},
 note = {論説},
 pages = {145--156},
 title = {A Survey of Reductions among Knapsack Problems},
 volume = {51},
 year = {2000}
}