A STABLE COMPOUND OF HELIUM AND SODIUM AT HIGH PRESSURE Статья Dong X., Oganov A.R., Goncharov A.F., Stavrou E., Lobanov S., Saleh G., Qian G.-R., Zhu Q., Gatti C., Deringer V.L., Dronskowski R., Zhou X.-F., Prakapenka V.B., Konôpková Z., Popov I.A., Boldyrev A.I., Wang H.-T. Nature Chemistry. Nature Publishing Group. Том 9. 2017. С. 440-445