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Astron. Astrophys. 320, L9-L12 (1997) AcknowledgementsWe thank the BATSE team and COSSC for providing the valuable pulsar data. We thank the anonymous referees for their comments and suggestions. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1997 Online publication: June 30, 1998 ![]() |