%0 Journal Article
%A Clarke, F. H.
%A Stern, R. J.
%A Wolenski, P. R.
%T Subgradient Criteria for Monotonicity, The Lipschitz Condition, and Convexity
%J Canadian journal of mathematics
%D 1993
%P 1167-1183
%V 45
%N 6
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-065-x/
%R 10.4153/CJM-1993-065-x
%F 10_4153_CJM_1993_065_x