@article{DAN_1968_180_4_a19,
     author = {D. T. Sviridov and Yu. F. Smirnov},
     title = {Quasispin formalism in the strong crystal field theory},
     journal = {Doklady Akademii Nauk},
     pages = {843--846},
     publisher = {mathdoc},
     volume = {180},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_180_4_a19/}
}