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Existence theorems for nonlinear partial differential equations. (English) Zbl 0211.17204
Global Analysis, Proc. Sympos. Pure Math. 16, 1-60 (1970).

47F05 General theory of partial differential operators
46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems
47-02 Research exposition (monographs, survey articles) pertaining to operator theory
49J40 Variational inequalities