@article{IVM_1980_2_a3,
     author = {O. A. Dubovik and O. B. Sidonskii},
     title = {A~group of matrices and {Legendre} kernels},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {29--33},
     publisher = {mathdoc},
     number = {2},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1980_2_a3/}
}