@article{article8c585e1e,
title   = {Approximate belief revision},
author = {Chopra, Samir and Parikh, Rohit and Wassermann, Renata},
year = {2001},
doi = {10.1093/jigpal/9.6.755},
journal   = {Logic Journal of the IGPL. Interest Group in Pure and Applied Logics}
}