%0 Journal Article %A Victor D\'{e}vou\'{e} %T On uniqueness for a characteristic Cauchy problem %J Novi Sad Journal of Mathematics %D 2014 %P 201-223 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/NSJOM_2014_44_1a_15/ %F NSJOM_2014_44_1a_15