@misc{M._A._El-Borie_North-south,
 author={M. A. El-Borie and M. El-Abshehy and S. Talaat and W. M. Abou Taleb},
 address={Երևան},
 howpublished={online},
 publisher={ՀՀ ԳԱԱ հրատ.},
 title={North-south asymmetry in solar, interplanetary and geomagnetic indices},
 type={Հոդված},
 keywords={Astrophysics, Science, Solar system},
}