Uniqueness of renormalized solutions to nonlinear elliptic equations with a lower order term and right-hand side in $L^1\left(\Omega \right)$

Betta, M. F.; Mercaldo, A.; Murat, F.; Porzio, M. M.

ESAIM: Control, Optimisation and Calculus of Variations, Volume 8 (2002) p. 239-272