On the hypoellipticity for infinitely degenerate semi-elliptic operators
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Publication:1243849
DOI10.2969/jmsj/03020327zbMath0369.35016OpenAlexW2030803036MaRDI QIDQ1243849
Publication date: 1978
Published in: Journal of the Mathematical Society of Japan (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.2969/jmsj/03020327
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