%0 Journal Article
%A Sharma,  Jaita Pankaj
%A George,  Raju K.
%T Controllability of matrix second order systems: a trigonometric matrix approach
%J Electronic journal of differential equations
%D 2007
%V 2007
%U http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a122/
%G en
%F EJDE_2007__2007__a122