scientific article; zbMATH DE number 3436014
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Publication:4402358
zbMATH Open0277.35023MaRDI QIDQ4402358
Publication date: 1973
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Degenerate elliptic equations (35J70) General theory of partial differential operators (47F05) Second-order elliptic equations (35J15) Hypoelliptic equations (35H10)
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