%0 Journal Article
%A Tatsien Li
%A Bopeng Rao
%T Kalman's criterion on the uniqueness of continuation for the nilpotent system of wave equations
%J Comptes Rendus. Mathématique
%D 2018
%P 1188-1194
%V 356
%N 11-12
%I Elsevier
%R 10.1016/j.crma.2018.09.006
%G en
%F CRMATH_2018__356_11-12_1188_0