@article{TMF_1989_79_3_a10,
     author = {R. A. Vlasov and O. N. Gadomsky and V. V. Samartsev},
     title = {Annihilation superradiance in~a~system of~positronium atoms and positron polarization of~the medium},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {423--436},
     year = {1989},
     volume = {79},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1989_79_3_a10/}
}