%0 Journal Article
%A Clarke, Frank H.
%T Inequality Constraints in the Calculus of Variations
%J Canadian journal of mathematics
%D 1977
%P 528-540
%V 29
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-055-6/
%R 10.4153/CJM-1977-055-6
%F 10_4153_CJM_1977_055_6