@article{MZM_1979_26_1_a8,
     author = {O. A. Dubovik and O. B. Sidonskii},
     title = {A~group of matrices and {Legendre} functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {71--77},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_1_a8/}
}