Ozguc, A. Et Al. 1998. Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21. SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT , vol.22, no.1 , 139-142.

Ozguc, A., Tulunay, Y., & Atac, T., (1998). Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21. SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT , vol.22, no.1, 139-142.

Ozguc, A, YURDANUR TULUNAY, And T Atac. "Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21," SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT , vol.22, no.1, 139-142, 1998

Ozguc, A Et Al. "Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21." SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT , vol.22, no.1, pp.139-142, 1998

Ozguc, A. Tulunay, Y. And Atac, T. (1998) . "Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21." SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT , vol.22, no.1, pp.139-142.

@article{article, author={A Ozguc Et Al. }, title={Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21}, journal={SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT}, year=1998, pages={139-142} }