Tulio Tavares George Teodoro Tahsin M. Kurç Renato Ferreira Dorgival Olavo Guedes Neto Wagner Meira Jr. Ümit V. Çatalyürek Shannon Hastings Scott Oster Stephen Langella Joel H. Saltz An Efficient and Reliable Scientific Workflow System. 445-452 2007 conf/ccgrid/2007 CCGRID http://dx.doi.org/10.1109/CCGRID.2007.20 db/conf/ccgrid/ccgrid2007.html#TavaresTKFNMCHOLS07