Amanatidis, G., G. Birmpas, A. Filos-Ratsikas, and A. Voudouris. “Peeking Behind the Ordinal Curtain: Improving Distortion via Cardinal Queries”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 02, Apr. 2020, pp. 1782-9, doi:10.1609/aaai.v34i02.5544.