@article{DAN_1978_240_4_a15,
     author = {S. A. Vugal'ter and G. M. Zhislin},
     title = {The discrete spectrum of the $n$-particle quantum system energy operator},
     journal = {Doklady Akademii Nauk},
     pages = {817--820},
     publisher = {mathdoc},
     volume = {240},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_240_4_a15/}
}