@incollection{johnston_patents_1970,
	address = {London},
	title = {Patents and {Economic} {Growth}},
	booktitle = {Technological {Innovation} and the {Economy}},
	publisher = {Wiley-Interscience},
	author = {Johnston, K. and Goldsmith, M.},
	year = {1970},
	pages = {233--239}
}