%0 Journal Article
%A Clarke, Francis
%T The maximum principle in optimal control, then and now
%J Control and Cybernetics
%D 2005
%P 709-722
%V 34
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CC_2005_34_3_a4/
%G en
%F CC_2005_34_3_a4