Comparing the emission spectra of U and Th hollow cathode lamps and a new U line listL. F. Sarmiento, A. Reiners, P. Huke, F. F. Bauer, E. W. Guenter, U. Seemann and U. WolterA&A, 618 (2018) A118DOI: https://doi.org/10.1051/0004-6361/201832871