@article{POSCH2011641,
title = {Time to change. Rating changes and policy implications},
author = {Peter N Posch},
url = {http://www.sciencedirect.com/science/article/pii/S0167268111001715},
doi = {10.1016/j.jebo.2011.06.026},
issn = {0167-2681},
year = {2011},
date = {2011-01-01},
journal = {Journal of Economic Behavior & Organization},
volume = {80},
number = {3},
pages = {641 - 656},
keywords = {Friction model, Migration policy, Rating stickiness},
pubstate = {published},
tppubtype = {article}
}