Fatih Ungan*, Unal Yesilgul, Serpil Şakiroğlu, Esin Kasapoglu, Ayse Erol, Mehmet C Arikan, Huseyin Sarı and Ismail Sökmen
* Corresponding author: Fatih Ungan fungan@cumhuriyet.edu.tr
Nanoscale Research Letters 2012, 7:606 doi:10.1186/1556-276X-7-606
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