SEN, S. The Hardness of Speeding-up Knapsack. BRICS Report Series, [S. l.], v. 5, n. 14, 1998. DOI: 10.7146/brics.v5i14.19286. Disponível em: https://tidsskrift.dk/brics/article/view/19286. Acesso em: 29 mar. 2024.