@article{AM2_1992__43_1_137446,
     author = {Otto Cella and G\"unter Lettl},
     title = {Power series and zeroes of trinomial equations.},
     journal = {Aequationes mathematicae},
     pages = {94--102},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1992},
     zbl = {0759.30001},
     url = {http://geodesic.mathdoc.fr/item/AM2_1992__43_1_137446/}
}