Leone, Nicola, et al. “The DLV System for Knowledge Representation and Reasoning”. ACM Transactions on Computational Logic, vol. 7, no. 3, 2006, pp. 499-62, https://doi.org/10.1145/1149114.1149117.
Leone, N., Pfeifer, G., Faber, W., Eiter, T., Gottlob, G., Perri, S., & Scarcello, F. (2006). The DLV system for knowledge representation and reasoning. ACM Transactions on Computational Logic, 7(3), 499-562. https://doi.org/10.1145/1149114.1149117
Leone N, Pfeifer G, Faber W, Eiter T, Gottlob G, Perri S, et al. The DLV system for knowledge representation and reasoning. ACM Transactions on Computational Logic. 2006;7(3):499-562.