@article{GDZPPN002082314, title = {Winch curves.}, journal = {Elemente der Mathematik}, volume = {44}, year = {1989}, pages = {124-129}, zbl = {0702.51015}, url = {http://dml.mathdoc.fr/item/GDZPPN002082314} }
Sanders, R. Winch curves.. Elemente der Mathematik, Tome 44 (1989) pp. 124-129. http://gdmltest.u-ga.fr/item/GDZPPN002082314/