@article{TMF_2019_198_3_a1,
     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 with $Z>Z_\mathrm{cr}$: {Vacuum} charge density},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {381--417},
     publisher = {mathdoc},
     volume = {198},
     number = {3},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2019_198_3_a1/}
}