Applied Physics Letters (2014) - Comments
doi: 10.1063/1.4861881  issn: 0003-6951  issn: 1077-3118 

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Ranu A. Dutta, Prashant K. Sharma, Vandana Tiwari, Vivek Tiwari, Anant B. Patel, Ravindra Pandey, Avinash C. Pandey