@article{KUTGS_1974_7_a19,
     author = {V. A. Yur'ev},
     title = {Certain questions on the line geometry of manifolds of hyperbolic lines},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {176--184},
     publisher = {mathdoc},
     volume = {7},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1974_7_a19/}
}