@book{gomez-ullateSymmetryClassificationSystems2000,
 address = {Providence, Rhode                     Island},
 author = {Gómez-Ullate, D. and Lafortune, S. and Winternitz, P.},
 doi = {10.1090/crmp/025},
 editor = {Levi, Decio and Ragnisco, Orlando},
 isbn = {978-0-8218-2128-2 978-1-4704-3939-2},
 langid = {english},
 month = {June},
 publisher = {American Mathematical                     Society},
 series = {CRM Proceedings and Lecture Notes},
 title = {Symmetry Classification of Systems of Differential-Difference Equations},
 urldate = {2025-10-19},
 volume = {25},
 year = {2000}
}