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Found 11 Documents (Results 1–3)

J. Sov. Math. 47, No. 2, 2493-2502 (1989); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 164, 176-188 (1987).
MSC:  35Q99 58J35 17B99
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