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The regularity of the solution to a certain variational inequality. (English) Zbl 0273.35027
Partial diff. Equ., Berkeley 1971, Proc. Sympos. Pure Math. 23, 353-363 (1973).

35J20 Variational methods for second-order elliptic equations
35D10 Regularity of generalized solutions of PDE (MSC2000)
53A10 Minimal surfaces in differential geometry, surfaces with prescribed mean curvature