FENG, Chunhua. Periodic Solutions for a Modified Delayed Heterogeneous Population-based Model. Transactions on Engineering and Computing Sciences, [S. l.], v. 14, n. 04, p. 49–59, 2026. DOI: 10.14738/tecs.1404.11944. Disponível em: https://scholarpublishing.org/journals/index.php/TECS/article/view/11944. Acesso em: 11 jul. 2026.