@article{BAG_1991__31_138477,
     author = {A. Krutov},
     title = {Nekotorye ponyatiya i sootnosheniya kinematiche skoi geometrii},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {87--102},
     publisher = {mathdoc},
     volume = {31},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/BAG_1991__31_138477/}
}