págs. 1-19
Different types of backward bifurcations on account of an improvement in treatment efficiency
Osvaldo Osuna, Shaday Guerrero Flores, Geiser Villavicencio Pulido
págs. 21-35
Existence of periodic solutions for seasonal epidemic models with quarantine
Osvaldo Osuna, Shaday Guerrero Flores, Geiser Villavicencio Pulido
págs. 37-47
págs. 49-57
págs. 59-65
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