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Baltic Region
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Kantian Journal
Surgical Practice
Differential Geometry of Manifolds
Vestnik
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Differential Geometry of Manifolds
1990 №21
Об одном классе конгруэнций линейчатых квадрик с фокальными поверхностями R
Differential Geometry of Manifolds
1990 №21
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Об одном классе конгруэнций линейчатых квадрик с фокальными поверхностями R
