@article{DAN_1982_265_6_a25,
     author = {E. A. Soldatov and \`E. A. Kuz'min and N. V. Belov},
     title = {On the characteristic equations of crystallographic matrices},
     journal = {Doklady Akademii Nauk},
     pages = {1390--1392},
     publisher = {mathdoc},
     volume = {265},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_265_6_a25/}
}