POSITIVITY OF DUALITY MAPPINGS

[1] ON A THEOREM OF BEURLING AND LIVINGSTON [J]. CANADIAN JOURNAL OF MATHEMATICS, 1965, 17 (03): : 367 - &

[2] MULTI-VALUED MONOTONE NONLINEAR MAPPINGS AND DUALITY MAPPINGS IN BANACH SPACES [J]. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1965, 118 (06) : 338 - &

[3] Livingston, 1962, ARK MAT, V4, P405

[4] CHARACTERIZATION OF SUBDIFFERENTIALS OF CONVEX FUNCTIONS [J]. PACIFIC JOURNAL OF MATHEMATICS, 1966, 17 (03) : 497 - &

[1] ON A THEOREM OF BEURLING AND LIVINGSTON [J]. CANADIAN JOURNAL OF MATHEMATICS, 1965, 17 (03): : 367 - &

[2] MULTI-VALUED MONOTONE NONLINEAR MAPPINGS AND DUALITY MAPPINGS IN BANACH SPACES [J]. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1965, 118 (06) : 338 - &

[3] Livingston, 1962, ARK MAT, V4, P405

[4] CHARACTERIZATION OF SUBDIFFERENTIALS OF CONVEX FUNCTIONS [J]. PACIFIC JOURNAL OF MATHEMATICS, 1966, 17 (03) : 497 - &