[1] Wascher, G., Schumann, H., An improved typology of cutting and packing problems, Eur. J. Oper. Res. 183 (3) (2007) 1109–1130.
[2] Nawrocki, J., Complak, W., Błazewicz, J., Kopczyn-' ska, S., Mac' kowiaki, M., The knapsack-lightening problem and its application to scheduling HRT tasks,Bull. Polish Acad. Sci.: Tech. Sci. 57 (1) (2009) 71–77.
[3] Kong, M., Tian, P., Kao, Y., A new ant colony optimization algorithm for the multidimensional knapsack problem, Comput. Oper. Res. 35 (8) (2008) 2672–2683.
[4] Granmo, O., Oommen, B,. Myrer, S., Olsen, M., Learning automata-based solutions to the nonlinear fractional knapsack problem with applications to optimal resource allocation, IEEE Trans Syst. Man Cybern. Part B Cybern. 37 (1) (2007) 166–175.
[5] Vanderster, D., Dimopoulos, N., Parra-Hernandez, R., Sobie, R., Resource allocation on computational grids using a utility model and the knapsack problem, Future Gener. Comput. Syst. 25 (1) (2009) 35–50.
[6] Deng, Y., Chen, Y., Zhang, Y., Mahadevan, S., Fuzzy Dijkstra algorithm for shortest path problem under uncertain environment, Appl. Soft Comput. 12 (2011) 1231-1237.
[7] Mavrotas, G., Diakoulaki, D., Kourentzis, A., Selection among ranked projects under segmentation, policy and logical constraints, Eur. J. Oper. Res. 187 (1) (2008) 177-192.
[8] Bas, E., A capital budgeting problem for preventing workplace mobbing by using analytic hierarchy process and fuzzy 0-1 bidimensional knapsack model, Expert Syst. Appl. 38 (10) (2011) 12415-12422.
[9] Wilbaut, C., Hanafi, S., Salhi, S., A survey of effective heuristics and their application to a variety of knapsack problems, IMA J. Manage. Math. 19 (3)(2008) 227.
[10] Dudzinski, K., "A Dynamic Programming Approach to Solving the Multiple Choice Knapsack Problem”, Bull. Polish Acad. Sci., Tech. Sci., No. 32, 1984, PP. 325-332.
[11] Dyer, M.E., Kayal, N., Walker, J., "A Branch and Bound Algorithm for Solving the Multiple Choice Knapsack Problem”, Journal of Computational and Applied Mathematics, No. 11, 1984, PP. 231-249.
[12] Dyer, M.E., Riha, W.O., Walker, J., "A Hybrid Dynamic Programming/Branch and Bound Algorithm For The Multiple-Choice Knapsack Problem", Journal of Computational and Applied Mathematics, No. 58, 1995, PP. 43-54.
[13] Abdel-Basset, M., El-Shahat, D., and El-Henawy, I., "Solving 0-1 knapsack problem by binary flower pollination algorithm,” Neural Computing and Applications, vol. 31, no. 9, pp. 5477–5495, 2019.
[14] Olivas, F., Amaya, I., Ortiz-Bayliss, J.C., Conant-Pablos, S.E., and Terashima-Marin, H., "A Fuzzy Hyper-Heuristic Approach for the 0-1 Knapsack Problem," 2020 IEEE Congress on Evolutionary Computation (CEC), Glasgow, United Kingdom, 2020, pp. 1-8, doi: 10.1109/CEC48606.2020.9185710.
[15] L. A. Zadeh et al., "Fuzzy sets," Information and control, vol. 8, no. 3,pp. 338–353, 1965.
[16] Okada, S., Gen, M., "Fuzzy Multiple Choice Knapsack Problem", Fuzzy Sets and Systems, No. 67, 1994, PP. 71-80.
[17] Okada, S., Gen, M., "A Method for Solving Fuzzy Multi-Dimensional 0-1 Knapsack Problems", Japanese Journal Fuzzy Theory Systems, No. 6, 1995, PP. 687-702.
[18] Torra, V., Narukawa, Y., On hesitant fuzzy sets and decision. The 18-thIEEE International Conference on Fuzzy Systems, Jeju Island, Korea(2009) 1378-1382.
[19] Torra, V., Hesitant Fuzzy Sets, Int. J. Intell. Syst. 25 (2010) 529–539.
[20] Xia MM, Xu ZS, Chen N (2013) Some hesitant fuzzy aggregation operators with their application in group decision making. Group DecisNegot 22:259–279.
[21] Sengupta A, Pal TK (2000) On comparing interval numbers. Eur J Oper Res 127:28-43.
[22] Wei GW, Zhao XF, Li R (2013) Some hesitant interval-valued fuzzy aggregation operators and their applications to multiple attribute decision making. Knowl Based Syst 46:43–53.