@unpublished{publication-5691, author={Berentsen, Aleksander and Rocheteau, Guillaume and Shi, Shouyong}, institution={University of Zurich}, issn={1424-0459}, number={No. 154}, series={Working paper series / Institute for Empirical Research in Economics}, title={Friedman Meets Hosios: Efficiency in Search Models of Money}, year=2003, }