@incollection{osst90,
author = {Ostroy J. M. and Starr, R. M.},
title = {The transaction role of money},
booktitle = {The Handbook of Monetary Economics Vol. I},
editor = {Friedman, B. M. and Hahn, F. H.},
publisher = {North-Holland},
address = {Amsterdam},
year ={1990} 
}