scientific article; zbMATH DE number 3522437
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Publication:4100849
zbMath0334.35032MaRDI QIDQ4100849
Publication date: 1976
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Degenerate elliptic equations (35J70) Partial differential equations of mixed type and mixed-type systems of partial differential equations (35M99)
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