@article{DAN_1973_209_1_a16,
     author = {F. I. Fedorov},
     title = {Subgroups of the complex {Lorentz} group},
     journal = {Doklady Akademii Nauk},
     pages = {70--72},
     publisher = {mathdoc},
     volume = {209},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_1_a16/}
}