Introduction to asymptotic methods /
Awrejcewicz, J.(Jan)
Krysʹko, V. A.(Vadim Anatolʹevich),1937-
Boca Raton, Fla. ; London : Chapman & Hall/CRC,
2006.
Includes bibliographical references (p. 233-242) and index.
Singular perturbations (Mathematics)
Differential equations