Long-term spectroscopic monitoring of the Luminous Blue Variable AG Carinae O. Stahl, I. Jankovics, J. Kovács, B. Wolf, W. Schmutz, A. Kaufer, Th. Rivinius and Th. Szeifert A&A, 375 1 (2001) 54-69 Published online: 15 August 2001 DOI: 10.1051/0004-6361:20010824