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[1] Shubin M.A., UMN, 34:2 (1979), 95–135 | MR | Zbl
[2] Birman M.Sh., Borzov V.V., Problemy mat. fiz., 1971, no. 5, 24–38 | MR | Zbl
[3] Deift R.A., Hempel R., Comm. Math. Phys., 103 (1986), 461–490 | DOI | MR | Zbl
[4] Birman M.Sh., Operator Theory. Adv. and Appl., 46 (1990), 17–25 | MR | Zbl
[5] Hempel R.J., Reine Angew. Math., 399 (1989), 38–59 | MR | Zbl
[6] Birman M.Sh., Funktsion. analiz i ego pril., 25:2 (1991), 89–92 | MR | Zbl
[7] Alama S., Deift P.A., Hempel R., Comm. Math. Phys., 121 (1989), 291–321 | DOI | MR | Zbl
[8] Rid M., Saimon B., Metody sovremennoi matematicheskoi fiziki, t. 4, Mir, M., 1979 | MR