@article{DAN_1969_189_5_a15,
     author = {V. M. Vdovenko and \`E. V. Sobotovich},
     title = {On the problem of possible existence of superheavy elements in nature},
     journal = {Doklady Akademii Nauk},
     pages = {980--983},
     publisher = {mathdoc},
     volume = {189},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_189_5_a15/}
}