scientific article; zbMATH DE number 4124267
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Publication:4204559
zbMath0686.35094MaRDI QIDQ4204559
Publication date: 1987
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fixed-point theorems (47H10) Second-order nonlinear hyperbolic equations (35L70) Euler-Poisson-Darboux equations (35Q05)
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