@article{DAN_1967_177_4_a8,
     author = {E. E. Petrov},
     title = {The {Radon} transform in matrix spaces and in {Grassmann} manifolds},
     journal = {Doklady Akademii Nauk},
     pages = {782--785},
     publisher = {mathdoc},
     volume = {177},
     number = {4},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_177_4_a8/}
}