@article{GDZPPN002079593, title = {Polygonal Roulettes.}, journal = {Elemente der Mathematik}, volume = {32}, year = {1977}, pages = {81-88}, zbl = {0368.50006}, url = {http://dml.mathdoc.fr/item/GDZPPN002079593} }
DeTemple, D.W.; Baxter, D.J. Polygonal Roulettes.. Elemente der Mathematik, Tome 32 (1977) pp. 81-88. http://gdmltest.u-ga.fr/item/GDZPPN002079593/