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Source: Astronomy & Geophysics, Volume 48, Number 6, December 2007, pp. 6.9-6.10(1)
Document Type: Research Article
Affiliations: 1: Head of the Space Environment Group at the STFC's Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire. 2: Senior Lecturer in Planetary Science at Birkbeck College, University of London.
Publication date: December 1, 2007