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"Invariance and Set-Theoretical Operations in First Order Structures."
Alexandre A. M. Rodrigues, Ricardo C. Miranda Filho, Edelcio G. de Souza (2006)
- Alexandre A. M. Rodrigues, Ricardo C. Miranda Filho, Edelcio G. de Souza:
Invariance and Set-Theoretical Operations in First Order Structures. Reports Math. Log. 40: 207-213 (2006)
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