Conservation laws for NQC-type difference equations

@article{Rasin2006ConservationLF,
  title={Conservation laws for NQC-type difference equations},
  author={Alexander Rasin and Peter E. Hydon},
  journal={Journal of Physics A},
  year={2006},
  volume={39},
  pages={14055-14066}
}
This paper presents a classification of all three-point conservation laws for a large class of integrable difference equations that has been described by Nijhoff, Quispel and Capel. We show that every nonlinear equation from this class has at least two nontrivial conservation laws. Most of the conservation laws that are found are new. 

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