R. ESWARI; V. PIRAMANANTHAM. Existence of Positive Periodic Solutions in a Non-selective Harvesting Impulsive Predator-prey System with Multiple Delays. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 2 - A, p. 383–393, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/686. Acesso em: 19 may. 2024.