@article{KUTGS_1976_9_a7,
     author = {A. S. Martakova},
     title = {Line congruences in three-dimensional {Galilean} and {pseudo-Galilean} space},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {54--59},
     year = {1976},
     volume = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1976_9_a7/}
}