Ultraviolet and visual flux and line variations of one of the least variable Bp stars HD 64740 J. Krtička, J. Janík, H. Marková, Z. Mikulášek, J. Zverko, M. Prvák and M. Skarka A&A, 556 (2013) A18 Published online: 18 July 2013 DOI: 10.1051/0004-6361/201221018