@article{MZM_1996_59_1_a0,
     author = {J. Ahner and V. V. Dyakin and V. Ya. Raevskii and S. Ritter},
     title = {Spectral properties of operators of the theory of harmonic potential},
     journal = {Matemati\v{c}eskie zametki},
     pages = {3--11},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_59_1_a0/}
}