scientific article; zbMATH DE number 3576027
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Publication:4148286
zbMath0369.35046MaRDI QIDQ4148286
Publication date: 1977
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Spectral theory and eigenvalue problems for partial differential equations (35P99) PDEs with low regular coefficients and/or low regular data (35R05) Partial differential equations of mixed type and mixed-type systems of partial differential equations (35M99)
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