High and intermediate-resolution spectroscopy of Be stars - An atlas of Hγ, He I 4471 and Mg II 4481 linesJ. Chauville, J. Zorec, D. Ballereau, N. Morrell, L. Cidale and A. GarciaA&A, 378 3 (2001) 861-882DOI: https://doi.org/10.1051/0004-6361:20011202