TY - BOOK AU - Lagerstrom, P A TI - Matched asymptotic expansions : ideas and techniques T2 - Applied mathematical sciences; no.76 SN - 0387968113 U1 - 515.35 PY - 1988/// CY - New York PB - Springer-Veralg KW - Differential Equations-Numerical Solutions KW - Asymptotic Expansions KW - Singular Perturbations (Mathematics) KW -