@article{TMF_1971_7_1_a0,
     author = {W. I. Fushchych},
     title = {Additional invariance of relativistic equations of motion},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {3--12},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1971_7_1_a0/}
}