Bulatov, A., & Jeavons, P. (2000). Tractable constraints closed under a binary operation. Oxford University Computing Laboratory.
Citazione stile Chigago Style (17a edizione)Bulatov, A., e P. Jeavons. Tractable Constraints Closed Under a Binary Operation. Oxford University Computing Laboratory, 2000.
Citatione MLA (9a ed.)Bulatov, A., e P. Jeavons. Tractable Constraints Closed Under a Binary Operation. Oxford University Computing Laboratory, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.