Research Article
M. El-ghoul
J.ı. Okutoyı
Sabahattin Balcı
A.a. Öçal
E.m. Elkholy
Chandra Prem
Arif Sabuncuoğlu
Ömer L. Gebizlioğlu
M. Kemal Sağel
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics.