@article{KUTGS_1974_7_a7,
     author = {V. G. Kopp},
     title = {The isomorphisms that exist between certain subgroups of the groups of infinitesimal motions of {Lorentz} space and {Euclidean} and {Galilean} spaces},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {61--67},
     publisher = {mathdoc},
     volume = {7},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1974_7_a7/}
}