@article{M2AN_2020__54_4_1111_0,
     author = {Barucq, H\'el\`ene and Faucher, Florian and Pham, Ha},
     title = {Outgoing solutions and radiation boundary conditions for the ideal atmospheric scalar wave equation in helioseismology},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {1111--1138},
     publisher = {EDP-Sciences},
     volume = {54},
     number = {4},
     year = {2020},
     doi = {10.1051/m2an/2019088},
     mrnumber = {4099212},
     zbl = {1440.85003},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2019088/}
}