@article{TMF_1977_32_3_a6,
     author = {S. A. Vladimirov},
     title = {Symmetry groups of field equations for spin 1/2},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {360--372},
     publisher = {mathdoc},
     volume = {32},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1977_32_3_a6/}
}