Some problems for an equation of mixed type with two parabolic lines
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Publication:2530103
DOI10.1007/BF01040569zbMath0165.43901OpenAlexW2065178401MaRDI QIDQ2530103
Publication date: 1968
Published in: Siberian Mathematical Journal (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/bf01040569
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