Sacha Berger François Bry Tim Furche Andreas J. Häusler Completing Queries: Rewriting of Incomplete Web Queries Under Schema Constraints. 319-328 2007 conf/rr/2007 RR http://dx.doi.org/10.1007/978-3-540-72982-2_26 db/conf/rr/rr2007.html#BergerBFH07