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Regularity for the two obstacles problem. (English) Zbl 0481.35029

Free boundary problems, Proc. Semin. Pavia 1979, Vol. II, 135-139 (1980).

MSC:

35D10 Regularity of generalized solutions of PDE (MSC2000)
49J40 Variational inequalities
35R35 Free boundary problems for PDEs