@article{DAN_1976_226_5_a5,
     author = {E. I. Moiseev},
     title = {On the completeness of eigenfunctions  of some  boundary-value problems},
     journal = {Doklady Akademii Nauk},
     pages = {1012--1014},
     publisher = {mathdoc},
     volume = {226},
     number = {5},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_226_5_a5/}
}