Research Article
S Keleş
M. Kemal Sağel
Taylan A. Ula
Türkan Gül
Ertam İbikli
M. A Sarıgöl
İsmail Karakuyu
A. Aziz Ergin
S. D. Parashar
M. Beltagy
Hoda Kamal El-sayıed
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics.