@article{ELMA_1989__44_3_141458,
     author = {R. Redheffer and Alexander Voigt},
     title = {Die {Fredholmsche} {Alternative} und {Polynome.}},
     journal = {Elemente der Mathematik},
     pages = {89--92},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1989},
     zbl = {0704.12001},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1989__44_3_141458/}
}