Authors:
G.H.Janssen (1),
B.W. Stappers (2,1,3),
M. Kramer (3),
D.J. Nice (4),
A. Jessner (5),
I. Cognard (6),
M.B. Purver (3). ((1)University of Amsterdam, NL,(2)Astron, Dwingeloo, NL, (3)JBCA, University of Manchester, UK, (4)Bryn Mawr College, USA, (5)MPIfR, Bonn, DE, (6)CNRS, Orleans, FR)