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Astron. Astrophys. 332, 755-760 (1998) AcknowledgementsPP thanks JILA for their hospitality during his stay. This work belongs to the EC Human Capital and Mobility (Networks) project "Late type stars: activity, magnetism, turbulence" No. ERBCHRXCT940483.
© European Southern Observatory (ESO) 1998 Online publication: March 23, 1998 ![]() |