@article{MS_1942__53_3_a1,
     author = {B.B. {\CYRS}{\cyrt}{\cyre}{\cyrp}{\cyra}{\cyrn}{\cyro}{\cyrv}},
     title = {Sur l'\'equation de {Laplce} et certains syst\`emes triples orthogonaux},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {204--238},
     year = {1942},
     volume = {53},
     number = {3},
     zbl = {0061.22909},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/MS_1942__53_3_a1/}
}