@misc{A._G._Egikian_Two-colour,
 author={A. G. Egikian and A. T. Kalloghlian and D. Nanni and D. Trevese and A. Vignato},
 address={Երևան},
 howpublished={online},
 publisher={ՀՍՍՀ ԳԱ հրատ․},
 title={Two-colour photometry of clusters of galaxies. II A1213},
 type={Հոդված},
 keywords={Science, Astrophysics, Galaxy},
}