Research notes on a density problem of Erdős. Akbik, Safwan — 1999 International Journal of Mathematics and Mathematical Sciences

Factorial ratios that are integers. Akbik, Safwan — 1995 International Journal of Mathematics and Mathematical Sciences

A special prime divisor of the sequence: $ah+b,a(h+1)+b,\cdots ,a(h+k-1)+b$. Akbik, Safwan — 1991 International Journal of Mathematics and Mathematical Sciences

On a class of Diophantine equations. Akbik, Safwan — 2002 International Journal of Mathematics and Mathematical Sciences