WITHDRAWN: Average conditions for extinction in nonautonomous Kolmogorov systems Joanna P˛etela Institute of Mathematics and Computer Science, Wrocław University of Technology, Wrocław, Poland Received May 9, 2009; accepted September 3, 2009
The Publisher regrets that this article is an accidental duplication of an article that has already been published, doi:10.1016/j.na.2009.08.039, The duplicate article has therefore been withdrawn.
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