title: efficient approximation of optimization queries under parametric aggregation constraints. authors: s guha , d gunopulos , n koudas , d srivastava , m vlachos. venue: vldb. year: 2003
title: efficient evaluation of parameterized pattern queries. authors: c du mouza , p rigaux , m scholl. venue: proceedings of the 14th acm international conference on & hellip ; ,. year: 2005.0