@article{DAN_1971_197_3_a4,
     author = {E. I. Moiseev},
     title = {A mean-value formula for the eigenfunctions of a second-order elliptic selfadjoint operator},
     journal = {Doklady Akademii Nauk},
     pages = {524--525},
     publisher = {mathdoc},
     volume = {197},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_197_3_a4/}
}