FENG, Chunhua. Periodic Solutions for Delayed Malware Mutation Model. Transactions on Engineering and Computing Sciences, [S. l.], v. 13, n. 06, p. 309–321, 2025. DOI: 10.14738/tmlai.1306.19668. Disponível em: https://scholarpublishing.org/journals/index.php/TECS/article/view/1324. Acesso em: 6 may. 2026.