Bibitem:


@inproceedings{Madrid13,
Author = {Nicolas Madrid and Umberto Straccia},
Booktitle = {In Proceedings of the 10th International Conference on Flexible Query Answering Systems (FQAS-13)},
Volume = {8132},
Pages = {507--518},
Publisher = {Springer Verlag},
Series = {Lecture Notes in Artificial Intelligence},
Title = {On Top-k Retrieval for a Family of Non-monotonic Ranking Functions},
Year = {2013}}