I want to learn more about de Rham's trisection method in

• De Rham, Georges, Un peu de mathématiques à propos d'une courbe plane, Elemente der Mathematik 2 (1947): 73-76. http://eudml.org/doc/140463.

Specifically, if there exists a general formula for the limit of a polygon. I have the French version of his article, but I don't have the English version - could anyone provide a link?