Research Article
Center for General Education, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan
Boundary Value Problems 2010, 2010:579387 doi:10.1155/2010/579387
The electronic version of this article is the complete one and can be found online at: http://www.boundaryvalueproblems.com/content/2010/1/579387
| Received: | 9 October 2009 |
| Accepted: | 12 February 2010 |
| Published: | 8 March 2010 |
© 2010 The Author(s).
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.
, 
for all 
, where 
, 
, 
, 
. We allow the potential 
to be unbounded below and prove the existence and multiplicity for positive solutions.
