@misc{C._Magnan_A,
 author={C. Magnan and P. De Laverny},
 address={Երևան},
 howpublished={online},
 publisher={ՀՀ ԳԱԱ հրատ.},
 title={A simple problem of radiative transfer by multilevel atoms},
 type={Հոդված},
 keywords={Science, Radiation, Astrophysics, Stars},
}