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Abstract and Applied Analysis
Volume 2013 (2013), Article ID 398609, 5 pages
Fourteen Limit Cycles in a Seven-Degree Nilpotent System
1Guangxi Key Laboratory of Trusted Software, School of Computing Science and Mathematics, Guilin University of Electronic Technology, Guilin 541004, China
2Department of Mathematics, Hezhou University, Hezhou 542800, China
Received 13 August 2013; Accepted 30 October 2013
Academic Editor: Isaac Garcia
Copyright © 2013 Wentao Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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