Pohozhaev and Morawetz Identities in Elastostatics and Elastodynamics
  We construct identities of Pohozhaev type, in the context of elastostatics and elastodynamics, by using the Noetherian approach. As an application, a non-existence result for forced semi-linear isotropic and anisotropic elastic systems is established. 
Yuri Bozhkov and Peter J. Olver
math.AP math-ph math.MP