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D. W. Hu and Z. Q. Zhang, “Four Positive Periodic Solutions to a Lotka-Volterra Cooperative System with Harvesting Terms,” Nonlinear Analysis: Real World Applications, Vol. 11, No. 2, 2010, pp. 1115-1121.
http://dx.doi.org/10.1016/j.nonrwa.2009.02.002

has been cited by the following article:

• TITLE: Permanence and Globally Asymptotic Stability of Cooperative System Incorporating Harvesting

  AUTHORS: Fengying Wei, Cuiying Li

  KEYWORDS: Cooperative System; Equilibrium; Stability; Asymptotically Periodic Solution

  JOURNAL NAME: Advances in Pure Mathematics, Vol.3 No.7, October 17, 2013

  ABSTRACT: The stability of a kind of cooperative models incorporating harvesting is considered in this paper. By analyzing the characteristic roots of the models and constructing suitable Lyapunov functions, we prove that nonnegative equilibrium points of the models are globally asymptotically stable. Further, the corresponding nonautonomous cooperative models have a unique asymptotically periodic solution, which is uniformly asymptotically stable. An example is given to illustrate the effectiveness of our results.