%0 Journal Article %A Shreveo, Warren E. %T A Converse Problem in Matrix Differential Equations %J Canadian mathematical bulletin %D 1973 %P 401-403 %V 16 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-063-8/ %R 10.4153/CMB-1973-063-8 %F 10_4153_CMB_1973_063_8