TY  - BOOK
AU  - MacCallum, M. A. H
AU  - Stephani, Hans
TI  - Differential equations : their solution using symmetries
SN  - 9780521366892
SN  - 88036744
U1  - 515.35 STE 
PY  - 1989///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Differential equations - Numerical solutions
KW  - Symmetry
N1  - Includes bibliographical references (p. [253]-254)
ER  -