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Found 431 Documents (Results 1–3)

Vestn. St. Petersbg. Univ., Math. 52, No. 3, 317-326 (2019); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 6(64), No. 3, 505-518 (2019).
MSC:  85A04 70F15 85A05
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