A new recursion operator for the Viallet equation
  We present a new recursion and Hamiltonian operators for the Viallet equation. This new recursion operator and the recursion operator found in [Theoretical and Mathematical Physics, 167:421--443 (2011), arXiv:1004.5346] satisfy the elliptic curve equation associated with the Viallet equation. 
Alexander V. Mikhailov and Jing Ping Wang
nlin.SI