Scientific Issues of Jan Długosz University in Częstochowa. Mathematics > 1999 > Vol. 6 > 153--157
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journal ISSN : | 2450-9302 |
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Bibliography
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[1] H. Kestelman, The convergent sequence belonging to a set, J. London Math. Soc. XXII (1947),130 - 135.
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[2] T. Neubrunn and T. Šalát, Distance sets, Ratio sets and Certoin transjormations of sets of real numbers. Ćas, Pest. Mat. 94 (1969), 381 - 393.
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[3] M. Pal and S. Panda, On properties of sets under certein transformations, Glas. Mat. Vol. 30 (50) (1995), 181 - 192.