TY  - BOOK
AU  - Stephani Hans
TI  - Differintial equations:their solution using symmetries
SN  - 0521366895 (pbk)
U1  - B33, M9;1   TB 
PY  - 1989///
CY  - Cambridge
PB  - Cambridge University Press     
KW  -  Differential equations-numerical solutions
KW  -  Symmetry
KW  - Mathematics
N1  - Appendices A-B, 253-258p.; Index 259-260p
ER  -