Projective purities
Ladislav Bican (1972)
Commentationes Mathematicae Universitatis Carolinae
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Ladislav Bican (1972)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
Sheila Brenner (1998)
Colloquium Mathematicae
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Ladislav Bican, Josef Jirásko (1984)
Czechoslovak Mathematical Journal
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