@article{DAN_1980_254_5_a23,
     author = {V. A. Dzhrbashyan},
     title = {Square and projection of bispin as conserved quantities for particles described by the {Dirac} equation},
     journal = {Doklady Akademii Nauk},
     pages = {1116--1121},
     publisher = {mathdoc},
     volume = {254},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_5_a23/}
}