Diffusion limit of the simplified Langevin PDF model in weakly inhomogeneous turbulence Casimir Emako, Viviana Letizia, Nadezda Petrova, Rmi Sainct, Roland Duclous and Olivier Soulard ESAIM: Proc., 48 (2015) 400-419 Published online: 09 March 2015 DOI: 10.1051/proc/201448019