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Astron. Astrophys. 357, 767-776 (2000) AcknowledgementsWe wish to thank D. Brooks for his valuable input. GF acknowledges an EPSRC studentship and SL acknowledges an EPSRC-CASE studentship with the Rutherford Appleton Laboratory. SOHO is a project of international co-operation between ESA and NASA. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: June 5, 2000 ![]() |