News and Notices
(1969)
Czechoslovak Mathematical Journal
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(1969)
Czechoslovak Mathematical Journal
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Djuro R. Kurepa (1982)
Czechoslovak Mathematical Journal
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Goerisch, Friedrich, Albrecht, Julius
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H. Auerbach (1936)
Studia Mathematica
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(1991)
Mathematica Slovaca
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Stefan Krauss (1999)
The Teaching of Mathematics
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