@article{MZ_1981__178_173088,
     author = {Luqesio P. de Jorge and F.V. Xavier},
     title = {An {Inequality} between the {Exterior} {Diameter} and the {Mean} {Curvature} of {Bounded} {Immersions.}},
     journal = {Mathematische Zeitschrift},
     pages = {77--82},
     publisher = {mathdoc},
     volume = {178},
     year = {1981},
     zbl = {0464.53043},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__178_173088/}
}