TY  - BOOK
AU  - Bender,Carl M.
AU  - Orszag,Ateven A.
TI  - Advanced mathematical methods for scientists and engineers I: asymptotic methods and perturbation theory 
SN  - 0387989315 :
AV  - QA371 .B46
PY  - 1999///
CY  - New York
PB  - Springer-Verlag
KW  - Differential equations
KW  - Numerical solutions
ER  -