@article{DAN_1978_239_3_a5,
     author = {N. I. Kipriyanova},
     title = {Asymptotics of the spectral function of singular differential operators},
     journal = {Doklady Akademii Nauk},
     pages = {523--525},
     publisher = {mathdoc},
     volume = {239},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_3_a5/}
}