APA (7th ed.) Citation

Borchert, B., Kuske, D., & Stephan, F. (1999). On existentially first-order definable languages and their relation to NP. RAIRO. Theoretical informatics and applications, 33(3), . https://doi.org/10.1051/ita:1999116

Chicago Style (17th ed.) Citation

Borchert, Bernd, Dietrich Kuske, and Frank Stephan. "On Existentially First-order Definable Languages and Their Relation to NP." RAIRO. Theoretical Informatics and Applications 33, no. 3 (1999). https://doi.org/10.1051/ita:1999116.

MLA (9th ed.) Citation

Borchert, Bernd, et al. "On Existentially First-order Definable Languages and Their Relation to NP." RAIRO. Theoretical Informatics and Applications, vol. 33, no. 3, 1999, https://doi.org/10.1051/ita:1999116.