BibTex format
@unpublished{Haskel:2013,
author = {Haskel, J and Corrado, C and Jona-Lasinio, C and Iommi, M},
publisher = {Imperial College Business School},
title = {Innovation and intangible investment in Europe, Japan and the US},
url = {https://spiral.imperial.ac.uk:8443/handle/10044/1/11139},
year = {2013}
}