Remarks on the uniqueness of comparable renormalized solutions of   elliptic equations with measure data
  We give a partial uniqueness result concerning comparable renormalized solutions of the nonlinear elliptic problem $-\diw(\aop(x,Du))=\mu$ in $\Omega$, $u=0$ on $\partial\Omega$, where $\mu$ is a Radon measure with bounded variation on $\Omega$. 
Olivier Guib\'e (LMRS)