@article{DAN_1979_244_2_a4,
     author = {Ya. V. Kurylev},
     title = {On the asymptotics of the spectral function of a second-order elliptic differential operator},
     journal = {Doklady Akademii Nauk},
     pages = {281--285},
     publisher = {mathdoc},
     volume = {244},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_244_2_a4/}
}