@article{FAA_1983_17_2_a1,
     author = {I. M. Gel'fand and G. S. Shmelev},
     title = {Geometric structures of double bundles and their relation to certain problems in integral geometry},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {7--22},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1983_17_2_a1/}
}