@article{CRMATH_2005__340_7_483_0,
     author = {Dur\'an, Mario and Muga, Ignacio and N\'ed\'elec, Jean-Claude},
     title = {The {Helmholtz} equation with impedance in a half-plane},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {483--488},
     publisher = {Elsevier},
     volume = {340},
     number = {7},
     year = {2005},
     doi = {10.1016/j.crma.2005.02.015},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2005.02.015/}
}