TY  - BOOK
AU  - Vatsya, S. Raj
TI  - Foundations and applications of variational and perturbation methods
SN  - 9781606925911
U1  - 515.392 
PY  - 2009///
CY  - New York
PB  - Nova Science Publishers
KW  - Perturbation (Mathematics)
N1  - Includes bibliographical references and index
ER  -