Persistence and bifurcation analysis among four species interactions with the influence of competition, predation and harvesting. Iraqi Journal of Science, [S. l.], v. 64, n. 3, p. 1369–1390, 2023. DOI: 10.24996/ijs.2023.64.3.30. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7553.. Acesso em: 30 jun. 2024.