TY  - GEN
AU  - Hydon, Peter E.
TI  - Symmetry methods for differential equations: : a beginner's guide
SN  - 0-521-49786-8
U1  - 530.15535 
PY  - 2000///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Mathematical physics
N1  - Includes index and bibliography
ER  -