Panos Vassiliadis Alkis Simitsis Manolis Terrovitis Spiros Skiadopoulos Blueprints and Measures for ETL Workflows. 385-400 2005 conf/er/2005 ER http://dx.doi.org/10.1007/11568322_25 db/conf/er/er2005.html#VassiliadisSTS05