VLTI/AMBER observations of cold giant stars: atmospheric structures and fundamental parameters B. Arroyo-Torres, I. Martí-Vidal, J. M. Marcaide, M. Wittkowski, J. C. Guirado, P. H. Hauschildt, A. Quirrenbach and J. Fabregat A&A, 566 (2014) A88 Published online: 19 June 2014 DOI: 10.1051/0004-6361/201323264