@article{KUTGS_1983_15_a8,
     author = {S. N. Lubysheva},
     title = {Quadratic forms defining a complex of lines in a {Euclidean} 3-space},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {57--64},
     publisher = {mathdoc},
     volume = {15},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1983_15_a8/}
}