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International Journal of Differential Equations

Volume 2012 (2012), Article ID 720687, 17 pages

http://dx.doi.org/10.1155/2012/720687

Research Article

## Surfaces of a Constant Negative Curvature

^{1}Mathematics Department, College of Science and Information Technology, Zarqa Private University, Zarqa, Jordan^{2}Department of Mathematics, Faculty of Science, University of Tabouk, Ministry of Higher Education, P.O. Box 1144, Tabouk, Saudi Arabia

Received 10 March 2012; Revised 30 May 2012; Accepted 13 August 2012

Academic Editor: Wenming Zou

Copyright © 2012 G. M. Gharib. 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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