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Lua i Stíl Chicago (17ú heag.)Borner, F., A. Bulatov, P. Jeavons, agus A. Krokhin. Quantified Constraints: Algorithms and Complexity. 2003.
Lua MLA (9ú heag.)Borner, F., et al. Quantified Constraints: Algorithms and Complexity. 2003.
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