@misc{T._N._Harutyunian_Pauly,
 author={T. N. Harutyunian and H. H. Azizyan},
 howpublished={online},
 publisher={Изд-во НАН РА},
 type={Հոդված},
 title={Pauly matrix and transformation operators for dirac system},
 keywords={Mathematics},
}