LRO/LAMP study of the interstellar medium via the HeI 58.4 nm resonance lineC. Grava, W. R. Pryor, P. D. Feldman, K. D. Retherford, G. R. Gladstone and T. K. GreathouseA&A, 616 (2018) A159DOI: https://doi.org/10.1051/0004-6361/201731555