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& Li, Y.
(1991). Boundary C1, α Regularity for Variational Inequalities. Communications on Pure and Applied Mathematics, 44 (6), 715-732.
Attached is the author's accepted version of the article. The final, publisher's version is available from Wiley's Communications on Pure and Applied Mathematics at http://dx.doi.org/10.1002/cpa.3160440605.