@article{DE_2002_38_4_a10,
     author = {M. A. Soldatova},
     title = {Some {Order-of-Magnitude} {Estimates} for {Nonorthonormalized} {Fundamental} (in {Il'in's} {Sense)} {System} of {Functions} of the {Laplace} {Operator}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {516--520},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_4_a10/}
}