@booklet {32403,
	title = {International R\&amp;D Spillovers and Institutions},
	journal = {European Economic Review},
	volume = {53},
	year = {2009},
	note = { Explanation of R\&amp;D Data. },
	pages = {723-741},
	url = {http://scholar.harvard.edu/helpman/files/chh_2009_data.zip},
	author = {D. Coe and E. Helpman and A. Hoffmaister}
}
