@article{DAN_1960_132_4_a17,
     author = {F. M. Galperin},
     title = {On the number of $3d$-electrons in transition metals},
     journal = {Doklady Akademii Nauk},
     pages = {801--802},
     publisher = {mathdoc},
     volume = {132},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_4_a17/}
}