EUROPE Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Potsdam, Germany. 
Gravitational Physics and Relativity Group, 
Aristotle University of Thessaloniki 
Italian Society of General Relativity and Gravitation (SIGRAV) 
Relativity and Gravitation Group, Balearic Islands University 
Cardiff Relativity Group, University of Wales 
Queen Mary and Westfield 
Southampton Relativity Gopher, University of Southampton 
Isaac Newton Institute, Cambridge 
Relativity and Quantum Fields, University of Newcastle 
NORTH AMERICA National Center for Supercomputing Applications Pittsburgh Relativity Group, University of Pittsburgh 
Center for Relativity, Austin 
Center for Gravitational Physics and Geometry, Penn State University 
University of British Columbia Relativity Group 
Cosmology Group, Canadian Institute for Advanced Research 
Tufts Institute of Cosmology 
University of New Brunswick 
Gravity Group, Washington University 
Grand Challenge Page, Chapel Hill 
AUSTRALIA Australian National University Mathematical Relativity Group