00427nam a2200133 a 450000500170000002000150001708200170003210000060004911000430005524500680009826000540016630000270022049000460024720251203110904.0  a0821821288  a515.625bLEV  d_  aLevi, Decio and Ragnisco, Orlando Eds.  aSIDE III - Symmetries and integrability of difference equations  aRhode IslandbAmerican Mathematical Societyc2000  axvi, 444p.c22 cm.cPB  aCRM Proceedings & Lecture Notes [Vol. 25]