Doppler maps and surface differential rotation of EI Eri from the   MUSICOS 1998 observations
  We present time-series Doppler images of the rapidly-rotating active binary star EI Eri from spectroscopic observations collected during the MUSICOS multi-site campaign in 1998, since the critical rotation period of 1.947 days makes it impossible to obtain time-resolved images from a single site. From the surface reconstructions a weak solar-type differential rotation, as well as a tiny poleward meridional flow are measured. 
Zs. K\H{o}v\'ari, A. Washuettl, B.H. Foing, K. Vida, J. Bartus, K.   Ol\'ah and the MUSICOS 98 team