Origin of the Lyman excess in early-type stars R. Cesaroni, Á. Sánchez-Monge, M. T. Beltrán, S. Molinari, L. Olmi and S. P. Treviño-Morales A&A, 588 (2016) L5 Published online: 15 March 2016 DOI: 10.1051/0004-6361/201527841