McIntyre, S., A. Borgida, D. Toman, and G. Weddell. “On Limited Conjunctions and Partial Features in Parameter-Tractable Feature Logics”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 33, no. 01, July 2019, pp. 2995-02, doi:10.1609/aaai.v33i01.33012995.