Optical spectroscopic variability of Herbig Ae/Be stars I. Mendigutía, C. Eiroa, B. Montesinos, A. Mora, R. D. Oudmaijer, B. Merín and G. Meeus A&A, 529 (2011) A34 Published online: 28 March 2011 DOI: 10.1051/0004-6361/201015821