@article{DE_1990_26_10_a8,
     author = {N. N. Lebedev and I. P. Skal'skaja},
     title = {Expansion of an arbitrary function in series in squares of {Hermite} polynomials},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1722--1729},
     publisher = {mathdoc},
     volume = {26},
     number = {10},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_10_a8/}
}