Glancing through the accretion column of EXO 2030+375Carlo Ferrigno, Patryk Pjanka, Enrico Bozzo, Dmitry Klochkov, Lorenzo Ducci and Andrzej A. ZdziarskiA&A, 593 (2016) A105DOI: https://doi.org/10.1051/0004-6361/201527837