Monitoring evolved stars for binarity with the hermes spectrograph N. Gorlova, H. Van Winckel, J. Vos, R.H. Østensen, A. Jorissen, S. Van Eck and N. Ikonnikova EAS Publications Series, 64 (2013) 163-170 Published online: 25 February 2014 DOI: 10.1051/eas/1364023