@article{ELMA_1989__44_3_141465,
     author = {R. Sanders},
     title = {Winch curves.},
     journal = {Elemente der Mathematik},
     pages = {124--129},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1989},
     zbl = {0702.51015},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1989__44_3_141465/}
}