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"Existential second-order logic over graphs: Charting the tractability ..."
Georg Gottlob, Phokion G. Kolaitis, Thomas Schwentick (2004)
- Georg Gottlob
, Phokion G. Kolaitis, Thomas Schwentick:
Existential second-order logic over graphs: Charting the tractability frontier. J. ACM 51(2): 312-362 (2004)
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