%S Lecture Notes in Control and Information Sciences
%A E.A. Nurminski
%T On ɛ-subgradient methods of non-differentiable optimization
%N 14
%P 187-195
%B International Symposium on Systems Optimization and Analysis
%E A. Bensoussan
%E J.L. Lions
%V 14
%C Germany
%D 1979
%I Springer Berlin Heidelberg
%R doi:10.1007/BFb0002654
%L iiasa14268