A logical approach to multicut problems. - Georg Gottlob; Stephanie Tien Lee (Inf. Process. Lett., 2007)

Size and treewidth bounds for conjunctive queries. - Georg Gottlob; Stephanie Tien Lee; Gregory Valiant (PODS, 2009)

Size and Treewidth Bounds for Conjunctive Queries. - Georg Gottlob; Stephanie Tien Lee; Gregory Valiant; Paul Valiant (J. ACM, 2012)