@article{KUTGS_1974_7_a3,
     author = {V. V. Vishnevskii},
     title = {Norden's concomitant structures, and their generalizations},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {28--35},
     publisher = {mathdoc},
     volume = {7},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1974_7_a3/}
}