@article{TMF_1979_39_2_a8,
     author = {S. P. Efimov},
     title = {Transition operator between multipole states and their tensor structure},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {219--233},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1979_39_2_a8/}
}