1996 | ||
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3 | Kostas Hatzikiriakou: WKL0 and Stone's Separation Theorem for Convex Sets. Ann. Pure Appl. Logic 77(3): 245-249 (1996) | |
1991 | ||
2 | Kostas Hatzikiriakou: Minimal Prime Ideals and Arithmetic Comprehension. J. Symb. Log. 56(1): 67-70 (1991) | |
1989 | ||
1 | Kostas Hatzikiriakou, Stephen G. Simpson: Countable Valued Fields in Weak Subsystems of Second-Order Arithmetic. Ann. Pure Appl. Logic 41(1): 27-32 (1989) |
1 | Stephen G. Simpson | [1] |