Niels Joncheere Dirk Deridder Ragnhild Van Der Straeten Viviane Jonckers A Framework for Advanced Modularization and Data Flow in Workflow Systems. 592-598 2008 ICSOC http://dx.doi.org/10.1007/978-3-540-89652-4_51 conf/icsoc/2008 db/conf/icsoc/icsoc2008.html#JoncheereDSJ08