References
- Population Ecology Deterministic Mathematical Models Freedman,H.L.
- Math. Biosci. v.39 On global stability of predator-prey system Hsu,S.B.
- Stability by Liapunov's Direct Method with Application La Salle,J.;Lefschetz,S.
- Biomathematics Diffusion and Ecological Problems. Mathematical Models Okubo,A.