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2. Predator prey models with almost periodic coefficients;Gatica;Appl. Anal.,1988
3. Persistence in infinite dimensional systems;Hale;SIAM J. Math. Anal.,1989
4. Dynamical Systems and the Theory of Evolution;Hofbauer,1988
5. Iterative schemes for N-competing specis problems;Tineo;J. Differential Equations,1995