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    Journal: Math. Log. Q.

    Volume 31, Issue 7-8

    97 -- 108Galen Weitkamp. On the Existence and Recursion Theoretic Properties of ∑
    109 -- 115Hilbert Levitz. Decidability of some Problems Pertaining to Base 2 Exponential Diophantine Equations
    117 -- 122Peter H. Slessenger. 0
    123 -- 129Giangiacomo Gerla. Pavelka's Fuzzy Logic and Free L-Subsemigroups
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