@article{DAN_1957_114_2_a11,
     author = {E. E. Fradkin and S. V. Izmailov},
     title = {On permissible transformations of equations for particles with higher spins},
     journal = {Doklady Akademii Nauk},
     pages = {277--280},
     publisher = {mathdoc},
     volume = {114},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_2_a11/}
}