@article{MZM_1996_60_4_a5,
     author = {I. Chargoi},
     title = {Smooth approximations to solutions of perturbed {Weyl} and {Dirac} equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {538--555},
     publisher = {mathdoc},
     volume = {60},
     number = {4},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_4_a5/}
}