scientific article; zbMATH DE number 3229944
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zbMath0142.38701MaRDI QIDQ5518064
Publication date: 1966
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Existence theories for free problems in two or more independent variables (49J10) Methods involving semicontinuity and convergence; relaxation (49J45) Introductory exposition (textbooks, tutorial papers, etc.) pertaining to partial differential equations (35-01) Introductory exposition (textbooks, tutorial papers, etc.) pertaining to calculus of variations and optimal control (49-01) Elliptic equations and elliptic systems (35Jxx)
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