@article{10_4153_CJM_1999_020_0,
     author = {Bahn, Hyoungsick and Ehrlich, Paul},
     title = {A {Brunn-Minkowski} {Type} {Theorem} on the {Minkowski} {Spacetime}},
     journal = {Canadian journal of mathematics},
     pages = {449--469},
     year = {1999},
     volume = {51},
     number = {3},
     doi = {10.4153/CJM-1999-020-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-020-0/}
}