1993 | ||
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2 | Pawel Pazdyka: Definability of Models by Means of Existential Formulas without Identity. J. Symb. Log. 58(2): 424-434 (1993) | |
1 | Pawel Pazdyka: The First-order Coding of Models in Models with a Single Binary Relation. Reports on Mathematical Logic 27: 45-54 (1993) |