@article{FPM_1995_1_4_a24,
     author = {V. S. Serov},
     title = {On the convergence in $H^{s}$-norm of the spectral expansions corresponding to the differential operators with singularity},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {1125--1128},
     publisher = {mathdoc},
     volume = {1},
     number = {4},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1995_1_4_a24/}
}