Quotientbasen und (R)-dichte Mengen
Corrigendum to the paper "On ratio sets of sets of natural numbers"
On ratio sets of natural numbers
Normale Zahlen und Bairesche Kategorien von Mengen
Transformations that preserve uniform distribution
Statistical convergence of subsequences of a given sequence.
On the class of all reciprocal bases for integers.
On a class of densities of sets of positive integers.
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