@article{10_21136_CMJ_1985_102054,
     author = {Hansen, Wolfhard},
     title = {On the identity of {Keldych} solutions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {632--638},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {1985},
     doi = {10.21136/CMJ.1985.102054},
     mrnumber = {809046},
     zbl = {0642.31005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1985.102054/}
}