@article{TMF_1991_89_3_a7,
     author = {R. Z. Zhdanov and W. I. Fushchych},
     title = {Non-lie symmetry of {Galileo-invariant} equation for a~particle with spin $s=1/2$},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {413--419},
     publisher = {mathdoc},
     volume = {89},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_89_3_a7/}
}