@article{TMF_1970_5_2_a9,
     author = {V. F. Dmitriev and Yu. B. Rumer},
     title = {$O(2,1)${~Algebra} and the hydrogen atom},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {276--280},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_5_2_a9/}
}