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"On Positive Relational Calculi."
Renata P. de Freitas et al. (2007)
- Renata P. de Freitas, Paulo A. S. Veloso, Sheila R. M. Veloso, Jorge Petrucio Viana:
On Positive Relational Calculi. Log. J. IGPL 15(5-6): 577-601 (2007)
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