@misc{Guillermo_Haro_An,
 author={Guillermo Haro},
 address={Երևան},
 howpublished={online},
 publisher={ՀՍՍՀ ԳԱ հրատ․},
 title={An observational approach to stellar evolution},
 type={Հոդված},
 keywords={Astrophysics, Science, Stars},
}