Ergun Guntekin, Birol Uner, H. Turgut Sahin and Beyhan Karakus
Journal of Applied Sciences 8 ( 12 ): 2333 - 2336 , 2008
Mehmet Akgul, Birol Uner, Suleyman Korkut and Osman Camlibel
Pakistan Journal of Biological Sciences 10 ( 4 ): 607 - 611 , 2007