azzi cheyma2019-05-222019-05-222018-07-03salle des thesesms-510-75-01https://dspace.univ-tlemcen.dz/handle/112/14209this memorandum is mainly a synthesis of the article written by H.boudjellaba and T.Sari entitled stability loss delay in a class of slow and fast ecological models dating from 2007In chapter 1, we present a.../frMod`eles Ecologiques Retard BifurcationThesis