@TechReport{CEPII:2011-25,
author={Thierry Mayer and Soledad Zignago},
title={Notes on CEPII’s distances measures: The GeoDist database},
year=2011,
month=December,
institution={CEPII},
type={Working Papers},
url={http://www.cepii.fr/CEPII/en/publications/wp/abstract.asp?NoDoc=3877},
number={2011-25},
}