2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/135610In this paper we study the Lyapunov stability and Hopf bifurcation in a biological system which models the biological control of parasites of orange plantations.23 pages, 3 figuresDynamical SystemsClassical Analysis and ODEs70K50, 70K20text