Gottlob, G., Kolaitis, P., & Schwentick, T. (2000). Existential Second−Order Logic over Graphs: Charting the Tractability Frontier.
Lua i Stíl Chicago (17ú heag.)Gottlob, G., P. Kolaitis, agus T. Schwentick. Existential Second−Order Logic over Graphs: Charting the Tractability Frontier. 2000.
Lua MLA (9ú heag.)Gottlob, G., et al. Existential Second−Order Logic over Graphs: Charting the Tractability Frontier. 2000.
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