TY  - BOOK
AU  - Ching-Chau Yu
TI  - Nonlinear Singularities and Analytic-Hypoellipticity
U1  - MAMS 
PY  - 1998///
CY  - Providence
PB  - Amer. Math. Soc.
N1  - Memoirs of the Amer. Math. Soc., Vol. 134, N 636
ER  -