@article{TMF_2019_199_1_a4,
     author = {K. A. Sveshnikov and Yu. S. Voronina and A. S. Davydov and P. A. Grashin},
     title = {Essentially nonperturbative vacuum polarization effects in a~two-dimensional {Dirac--Coulomb} system for $Z>Z_{\text{cr}}$: {Vacuum} polarization effects},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {69--103},
     publisher = {mathdoc},
     volume = {199},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2019_199_1_a4/}
}