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A. M. Marin, R. D. Ortiz, J. A. Rodriguez       A generalization of a gradient system       International Mathematical Forum, Vol. 8, 2013, no. 17-20, 803-806       http://dx.doi.org/10.12988/imf.2013.13085
Copyright © 2013 A. M. Marin, R. D. Ortiz and J. A. Rodriguez. This article is 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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