@article{01505611, title = {Protecting regular polygons.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {41}, year = {2000}, pages = {391-399}, zbl = {0974.52016}, language = {en}, url = {http://dml.mathdoc.fr/item/01505611} }
Kemnitz, Arnfried; Szabó, László; Ujváry-Menyhárt, Zoltán. Protecting regular polygons.. Beiträge zur Algebra und Geometrie, Tome 41 (2000) pp. 391-399. http://gdmltest.u-ga.fr/item/01505611/