TY  - BOOK
AU  - Levi,D.,et al (ed)
ED  - Vinet, L
ED  - Winternitz, P
TI  - Symmetries & integrability of difference equations
T2  - CRM proceedings & lecture notes 9
SN  - 9780821806012
U1  - 10.13 
PY  - 1996///
CY  - Providence
PB  - American Mathematical Society
ER  -