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Found 4 Documents (Results 1–3)

J. Math. Sci., New York 251, No. 1, 131-140 (2020); translation from Zap. Nauchn. Semin. POMI 474, 199-212 (2018).
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J. Math. Sci., New York 229, No. 6, 744-755 (2018); translation from Zap. Nauchn. Semin. POMI 454, 220-237 (2017).
MSC:  35C15 35G10
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