The generalized Poho{z}aev-Schoen identity and some geometric   applications
  In this note we show how a generalized Pohozaev-Schoen identity due to Gover and Orsted \cite{GO} can be used to obtain some rigidity results for $V$-static manifolds and generalized solitons. We also obtain an Alexandrov type result for certain hypersurfaces in Einstein manifolds. 
Ezequiel Barbosa, Levi Lopes de Lima and Allan Freitas
math.DG