Vicente Olmedo Víctor A. Villagrá Kleopatra Konstanteli Juan E. Burgos Julio Berrocal Network mobility support for Web Service-based Grids through the Session Initiation Protocol. 758-767 2009 25 Future Generation Comp. Syst. 7 http://dx.doi.org/10.1016/j.future.2008.11.007 db/journals/fgcs/fgcs25.html#OlmedoVKBB09