Links to portals:
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EGEE - Enabling Grids for E-sciencE
  http://www.eu-egee.org/

gLite - Lightweight Middleware for Grid Cpmputing
  http://glite.web.cern.ch/glite/

GILDA - Grid Infn Laboratory Dissemination Activities
  https://gilda.ct.infn.it/

GENIUS - A demonstration web portal for GILDA testbed
  https://glite-tutor2.ct.infn.it/

SlovakGrid - Slovenská gridová iniciatíva
  http://www.slovakgrid.sk/

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