Open and image-open relations
S. Franklin (1964)
Colloquium Mathematicae
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S. Franklin (1964)
Colloquium Mathematicae
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Masaaki Amou (1991)
Acta Arithmetica
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Hong-Quan Liu (1991)
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K. Urbanik (1964)
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S. Hartman, C. Ryll-Nardzewski (1964)
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Togo Nishiura (1964)
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P. Jarek (1964)
Colloquium Mathematicae
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