@article{IM_1969__7_141966,
     author = {E. BOMBIERI and E. DE GIORGI and E. GIUSTI},
     title = {Minimal {Cones} and the {Bernstein} {Problem.}},
     journal = {Inventiones mathematicae},
     pages = {243--268},
     publisher = {mathdoc},
     volume = {7},
     year = {1969},
     zbl = {0183.25901},
     url = {http://geodesic.mathdoc.fr/item/IM_1969__7_141966/}
}