Mustafa, F. Et Al. 2014. Sunspot activity for last cycles. Solar Influence on the Magnetosphere, Ionosphere and Atmosphere , (Sozopol, Bulgaria).

Mustafa, F., KILÇIK, A., Babayev, E., & Ozguc, A., (2014). Sunspot activity for last cycles . Solar Influence on the Magnetosphere, Ionosphere and Atmosphere, Sozopol, Bulgaria

Mustafa, F Et Al. "Sunspot activity for last cycles," Solar Influence on the Magnetosphere, Ionosphere and Atmosphere, Sozopol, Bulgaria, 2014

Mustafa, F Et Al. "Sunspot activity for last cycles." Solar Influence on the Magnetosphere, Ionosphere and Atmosphere , Sozopol, Bulgaria, 2014

Mustafa, F. Et Al. (2014) . "Sunspot activity for last cycles." Solar Influence on the Magnetosphere, Ionosphere and Atmosphere , Sozopol, Bulgaria.

@conferencepaper{conferencepaper, author={F Mustafa Et Al. }, title={Sunspot activity for last cycles}, congress name={Solar Influence on the Magnetosphere, Ionosphere and Atmosphere}, city={Sozopol}, country={Bulgaria}, year={2014}}