Pawan Kumar, Jin-Soo Park*, Prabhsharan Randhawa, Sandeep Sharma, Mun-Sik Shin and Satpal S Sekhon*
* Corresponding authors: Jin-Soo Park energy@smu.ac.kr - Satpal S Sekhon sekhon_apd@yahoo.com
Nanoscale Research Letters 2011, 6:583 doi:10.1186/1556-276X-6-583
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