TY  - BOOK
AU  - Berestycki H Ed.
AU  -  Brezis H Ed.
TI  - Recent contributions to nonlinear partial differential equations
T2  - Research notes in mathematics; 50
U1  - B334, M1 
PY  - 1981///
CY  - Boston
PB  - Pitman Advanced Publishing Programs      
ER  -