@article{10_21136_AM_1973_103491,
     author = {Christiansen, S{\o}ren},
     title = {Computation of {Sommerfeld's} attenuation function},
     journal = {Applications of Mathematics},
     pages = {379--384},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {1973},
     doi = {10.21136/AM.1973.103491},
     zbl = {0264.65080},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1973.103491/}
}