Hasan Gülbiçima, , , M. Çağatay Tufana, M. Nureddin Türkanb
a Ondokuzmayıs University, Faculty of Arts and Sciences, Samsun 55319, Turkey
b Istanbul Medeniyet University, Faculty of Engineering and Natural Sciences, Department of Engineering Physics, 34720 Uskudar/Istanbul, Turkey
Received 9 November 2015, Revised 21 July 2016, Accepted 23 July 2016, Available online 25 July 2016