Cangül, İ. N. And Bizim, O. 1999. Cycloidal Normal Subgroups of Hecke Groups of Finite Index. Tr. J. of Mathematics , vol.23 , 145-154.

Cangül, İ. N., & Bizim, O., (1999). Cycloidal Normal Subgroups of Hecke Groups of Finite Index. Tr. J. of Mathematics , vol.23, 145-154.

Cangül, İSMAİL, And OSMAN BİZİM. "Cycloidal Normal Subgroups of Hecke Groups of Finite Index," Tr. J. of Mathematics , vol.23, 145-154, 1999

Cangül, İSMAİL N. And Bizim, OSMAN. "Cycloidal Normal Subgroups of Hecke Groups of Finite Index." Tr. J. of Mathematics , vol.23, pp.145-154, 1999

Cangül, İ. N. And Bizim, O. (1999) . "Cycloidal Normal Subgroups of Hecke Groups of Finite Index." Tr. J. of Mathematics , vol.23, pp.145-154.

@article{article, author={İSMAİL NACİ CANGÜL And author={OSMAN BİZİM}, title={Cycloidal Normal Subgroups of Hecke Groups of Finite Index}, journal={Tr. J. of Mathematics}, year=1999, pages={145-154} }