Yangjun CHEN; Bobin CHEN. Most Popular Package Design and NP-Hard Problem. Novel Research Aspects in Mathematical and Computer Science Vol. 8, [S. l.], p. 74–89, 2022. DOI: 10.9734/bpi/nramcs/v8/3788E. Disponível em: https://stm.bookpi.org/NRAMCS-V8/article/view/8359. Acesso em: 4 jun. 2026.