@inbook{de Vries1990,
author = {de Vries, J. },
title= {Problems in the measurement, description and analysis of historical urbanization},
year = {1990},
editor = {Van Der Woude, A.M.},
editor = {Hayami, A.},
editor = {de Vries, J. },
booktitle = {Urbanization in history: A process of dynamic interactions},
address = {Oxford},
publisher = {Clarendon Press},
pages = {43--73},
}