@article{TMF_1983_54_3_a7,
     author = {A. A. Grib and N. Sh. Urusova},
     title = {Vacuum polarization of a~massless field and conformal transformations},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {398--405},
     publisher = {mathdoc},
     volume = {54},
     number = {3},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1983_54_3_a7/}
}