Robert Brijder, Floris Geerts, Jan Van den Bussche, Timmy Weerwag. On the Expressive Power of Query Languages for Matrices. In Benny Kimelfeld, Yael Amsterdamer, editors, 21st International Conference on Database Theory, ICDT 2018, March 26-29, 2018, Vienna, Austria. Volume 98 of LIPIcs, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2018. [doi]