On some types of kernels of a convergence -group
Ján Jakubík (1989)
Czechoslovak Mathematical Journal
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Ján Jakubík (1989)
Czechoslovak Mathematical Journal
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Josef Novák (1970)
Czechoslovak Mathematical Journal
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Dikran N. Dikranjan, Roman Frič, Fabio Zanolin (1987)
Czechoslovak Mathematical Journal
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