Об областях типа
Jindřich Nečas (1962)
Czechoslovak Mathematical Journal
Similarity:
Jindřich Nečas (1962)
Czechoslovak Mathematical Journal
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Andrey V. Koldunov, G. Ja. Rotkovič (1987)
Czechoslovak Mathematical Journal
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В. Кондаков (1983)
Studia Mathematica
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Алойз Неметы (1978)
Banach Center Publications
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