@article{10_4153_CMB_1972_053_6,
     author = {Cook, W. D. and Webster, R. J.},
     title = {Carath\'eodory's {Theorem}},
     journal = {Canadian mathematical bulletin},
     pages = {293--293},
     year = {1972},
     volume = {15},
     number = {2},
     doi = {10.4153/CMB-1972-053-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-053-6/}
}