@article{JRAM_1971__247_151090,
     author = {J.L. Stebbins},
     title = {Spiral functions with finite sets of asypmtotic values.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {18--19},
     publisher = {mathdoc},
     volume = {247},
     year = {1971},
     zbl = {0215.42101},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1971__247_151090/}
}