BULUT, A. Et Al. 2010. Period Changes Of The Eclipsing Binaries DR Vul and V821 Cas Showing Apsidal Motion. Balkan Physics Letters , vol.18 , 196-200.

BULUT, A., BULUT, İ., ÇİÇEK, C., & ERDEM, A., (2010). Period Changes Of The Eclipsing Binaries DR Vul and V821 Cas Showing Apsidal Motion. Balkan Physics Letters , vol.18, 196-200.

BULUT, AHMET Et Al. "Period Changes Of The Eclipsing Binaries DR Vul and V821 Cas Showing Apsidal Motion," Balkan Physics Letters , vol.18, 196-200, 2010

BULUT, AHMET Et Al. "Period Changes Of The Eclipsing Binaries DR Vul and V821 Cas Showing Apsidal Motion." Balkan Physics Letters , vol.18, pp.196-200, 2010

BULUT, A. Et Al. (2010) . "Period Changes Of The Eclipsing Binaries DR Vul and V821 Cas Showing Apsidal Motion." Balkan Physics Letters , vol.18, pp.196-200.

@article{article, author={AHMET BULUT Et Al. }, title={Period Changes Of The Eclipsing Binaries DR Vul and V821 Cas Showing Apsidal Motion}, journal={Balkan Physics Letters}, year=2010, pages={196-200} }