@unpublished{Griffith2011,
author = {Rachel Griffith and Helen Miller},
title = {Innovation in China: the rise of Chinese inventors in the production of knowledge},
year = {2011},
month = {Sep},
doi = {10.1920/wp.ifs.2011.1115},
url = {http://www.ifs.org.uk/wps/wp1115.pdf},
}