@article{TMF_2004_141_3_a6,
     author = {M. V. Karasev and E. M. Novikova},
     title = {Algebra with {Quadratic} {Commutation} {Relations} for an {Axially} {Perturbed} {Coulomb--Dirac} {Field}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {424--454},
     publisher = {mathdoc},
     volume = {141},
     number = {3},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2004_141_3_a6/}
}