Atmospheric-radiation boundary conditions for high-frequency waves in time-distance helioseismologyD. Fournier, M. Leguèbe, C. S. Hanson, L. Gizon, H. Barucq, J. Chabassier and M. DurufléA&A, 608 (2017) A109DOI: https://doi.org/10.1051/0004-6361/201731283