@article{DA_1976_15_a2,
     author = {S. E. Gvozdev},
     title = {A generalization of the knapsack problem},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {16--31},
     publisher = {mathdoc},
     number = {15},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1976_15_a2/}
}