TY - BOOK AU - Kevorkian,J. AU - Cole,J.D. TI - Perturbation methods in applied mathematics SN - 0387905073 PY - 1981/// CY - New York, N.Y. PB - Springer-Verlag KW - Mathematics KW - Differential equations KW - Numerical solutions KW - Asymptotic theory KW - Perturbation (Mathematics) ER -