摘要：A nonautonomous -species discrete Lotka-Volterra competitive system with delays and feedback controls is considered in this work. Sufficient conditions on the coefficients are given to guarantee that all the species are permanent. It is shown that these conditions are weaker than those of Liao et al. 2008.
关键词：Positive Constant ; Functional Equation ; Feedback Control ; Difference Equation ; Discrete Model
