TY  - BOOK
AU  - Smith,Donald R.
TI  - Singular-perturbation theory: an inroduction with applications 
SN  - 0521300428
PY  - 1985///
CY  - Cambridge, N.Y.
PB  - Cambridge University Press
KW  - Mathematics
KW  - Differential equations
KW  - Numerical solutions
KW  - Perturbation (Mathematics)
ER  -