@article{JRAM_1964__216_150643,
     author = {Douglas Derry},
     title = {A class of {Polygons} with infinitely many {Sides.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {31--42},
     publisher = {mathdoc},
     volume = {216},
     year = {1964},
     zbl = {0121.38901},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1964__216_150643/}
}