@article{ELMA_1977__32_141196,
     author = {D.W. DeTemple and D.J. Baxter},
     title = {Polygonal {Roulettes.}},
     journal = {Elemente der Mathematik},
     pages = {81--88},
     publisher = {mathdoc},
     volume = {32},
     year = {1977},
     zbl = {0368.50006},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1977__32_141196/}
}