Media type: E-Article Title: On the local gevrey and quasi-analytic hypoellipticity of □b Contributor: Tartakoff, David S. Published: Informa UK Limited, 1977 Published in: Communications in Partial Differential Equations, 2 (1977) 7, Seite 699-712 Language: English DOI: 10.1080/03605307708820046 ISSN: 0360-5302; 1532-4133 Keywords: Applied Mathematics ; Analysis Origination: Footnote: