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Author: Korec, Ivan

• Korec, Ivan: A density estimate for the $3x+1$ problem. (English). Mathematica Slovaca, vol. 44 (1994), issue 1, pp. 85-89
• Korec, Ivan: Structures related to Pascal's triangle modulo $2$ and their elementary theories. (English). Mathematica Slovaca, vol. 44 (1994), issue 5, pp. 531-554