@article{DAN_1990_311_5_a21,
     author = {R. A. Vlasov and O. N. Gadomsky and M. G. Shageev},
     title = {Annihilation super-emission in a system of positronium atoms},
     journal = {Doklady Akademii Nauk},
     pages = {1115--1118},
     year = {1990},
     volume = {311},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_311_5_a21/}
}