AMBER/VLTI observations of five giant stars F. Cusano, C. Paladini, A. Richichi, E. W. Guenther, B. Aringer, K. Biazzo, R. Molinaro, L. Pasquini and A. P. Hatzes A&A, 539 (2012) A58 Published online: 24 February 2012 DOI: 10.1051/0004-6361/201116731