Rafael Tolosana-Calasanz José A. Bañares Pedro Álvarez Joaquin Ezpeleta On Interlinking of Grids: A Proposal for Improving the Flexibility of Grid Service Interactions. 714-720 2008 ICIW http://doi.ieeecomputersociety.org/10.1109/ICIW.2008.39 conf/iciw/2008 db/conf/iciw/iciw2008.html#Tolosana-CalasanzBAE08