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@article{DE_2000_36_1_a16, author = {D. V. Il'in}, title = {The {Schr\"{o}dinger} operator with a $\delta$-potential: {The} case of degenerate resonances}, journal = {Differencialʹnye uravneni\^a}, pages = {124--126}, publisher = {mathdoc}, volume = {36}, number = {1}, year = {2000}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2000_36_1_a16/} }
D. V. Il'in. The Schr\"{o}dinger operator with a $\delta$-potential: The case of degenerate resonances. Differencialʹnye uravneniâ, Tome 36 (2000) no. 1, pp. 124-126. http://geodesic.mathdoc.fr/item/DE_2000_36_1_a16/