| Institution: | Institute of Astronomy, Madingley Road, Cambridge CB3 0HA;Leiden Observatory, PO Box 9513, 2300 RA, Leiden, The Netherlands;Joint Institute for VLBI in Europe, Postbus 2, 7990 AA, Dwingeloo, The Netherlands;Netherlands Foundation for Research in Astronomy, Postbus 2, 7990 AA, Dwingeloo, The Netherlands;Kapteyn Institute, Postbus 800, 9700 AV, Groningen, The Netherlands;Institut d'Astrophysique de Paris, 98bis Boulevard Arago, 75014 Paris, France;Department of Physics, Bristol University, H H Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL |
