Boundary Value Problems 2009, 2009:541435 doi:10.1155/2009/541435
The electronic version of this article is the complete one and can be found online at: http://www.boundaryvalueproblems.com/content/2009/1/541435
|Received:||16 March 2009|
|Accepted:||28 May 2009|
|Published:||29 June 2009|
© 2009 The Author(s).
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