TY  - BOOK
AU  - Encyclopaedia of Mathematical Sciences
AU  - Fedoryuk, M V
TI  - Partial differential equations V: : asymptotic methods for partial differential equations 
SN  - 3540533710
U1  - 510.3 
PY  - 1999///
CY  - Berlin
PB  - Springer-Verlag
ER  -