%0 Journal Article %A Yves Martinez-Maure %T Hedgehogs of constant width and equichordal points %J Annales Polonici Mathematici %D 1997 %P 285-288 %V 67 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-67-3-285-288/ %R 10.4064/ap-67-3-285-288 %G en %F 10_4064_ap_67_3_285_288