@article{TMF_2007_150_1_a2,
     author = {B. L. Voronov and D. M. Gitman and I. V. Tyutin},
     title = {The~Dirac {Hamiltonian} with a~superstrong {Coulomb} field},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {41--84},
     publisher = {mathdoc},
     volume = {150},
     number = {1},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2007_150_1_a2/}
}