TY  - JOUR
AU  - Joseph J. Kohn
AU  - Makhlouf Derridj
AU  - David S. Tartakoff
TI  - Hypoellipticity and loss of derivatives (with an Appendix by Makhlouf Derridj and David S. Tartakoff)
JO  - Annals of mathematics
PY  - 2005
SP  - 943
EP  - 986
VL  - 162
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.162.943/
DO  - 10.4007/annals.2005.162.943
LA  - en
ID  - 10_4007_annals_2005_162_943
ER  -