Three dimensional Lifshitz black hole and the Korteweg-de Vries equation
  We consider a solution of three dimensional New Massive Gravity with a negative cosmological constant and use the AdS/CTF correspondence to inquire about the equivalent two dimensional model at the boundary. We conclude that there should be a close relation with the Korteweg-de Vries equation. 
E. Abdalla, Jeferson de Oliveira, A. Lima Santos and A. B. Pavan
hep-th gr-qc