Propagation of singularities and semi-global existence theorems for (pseudo-)differential operators of principal type

DOI10.2307/1971189zbMath0396.35087OpenAlexW2317259639WikidataQ110897982 ScholiaQ110897982MaRDI QIDQ1253381

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Publication date: 1978

Published in: (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/1971189

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