@article{GDZPPN002076225,
title = {Axially Symmetric Polygons Inscribed in and Circumscribed about Convex sets.},
journal = {Elemente der Mathematik},
volume = {22},
year = {1967},
pages = {121-133},
zbl = {0171.20901},
url = {http://dml.mathdoc.fr/item/GDZPPN002076225}
}
Abel de Valcourt, B. de. Axially Symmetric Polygons Inscribed in and Circumscribed about Convex sets.. Elemente der Mathematik, Tome 22 (1967) pp. 121-133. http://gdmltest.u-ga.fr/item/GDZPPN002076225/