@article{ELMA_1967__22_140867,
     author = {B. de Abel de Valcourt},
     title = {Axially {Symmetric} {Polygons} {Inscribed} in and {Circumscribed} about {Convex} sets.},
     journal = {Elemente der Mathematik},
     pages = {121--133},
     publisher = {mathdoc},
     volume = {22},
     year = {1967},
     zbl = {0171.20901},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1967__22_140867/}
}