Joachim Biskup Jens Seiler Torben Weibert Controlled Query Evaluation and Inference-Free View Updates. 1-16 2009 DBSec http://dx.doi.org/10.1007/978-3-642-03007-9_1 conf/dbsec/2009 db/conf/dbsec/dbsec2009.html#BiskupSW09