@misc{W._Hoegner_Large-scale,
 author={W. Hoegner and Z. Kadla and N. Richter and A. Strugatskaya},
 address={Երևան},
 howpublished={online},
 publisher={ՀՍՍՀ ԳԱ հրատ․},
 type={Հոդված},
 title={Large-scale structural characteristics and photometry of NGC 3031 determined from equidensity curves},
 keywords={Astrophysics, Science, Galaxy},
}