@article{10_4064_ap_67_3_285_288,
     author = {Yves Martinez-Maure},
     title = {Hedgehogs of constant width and equichordal points},
     journal = {Annales Polonici Mathematici},
     pages = {285--288},
     publisher = {mathdoc},
     volume = {67},
     number = {3},
     year = {1997},
     doi = {10.4064/ap-67-3-285-288},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-67-3-285-288/}
}