Barbara Weber Hajo A. Reijers Stefan Zugal Werner Wild The Declarative Approach to Business Process Execution: An Empirical Test. 470-485 2009 CAiSE http://dx.doi.org/10.1007/978-3-642-02144-2_37 conf/caise/2009 db/conf/caise/caise2009.html#WeberRZW09