BibTex format
@article{Greenhalgh:2013:oep/gpt020,
author = {Greenhalgh, C and Haskel, J and Helmers, C},
doi = {oep/gpt020},
journal = {OXFORD ECONOMIC PAPERS-NEW SERIES},
pages = {597--602},
title = {Introduction to the Special Issue on Innovation and Intellectual Property},
url = {http://dx.doi.org/10.1093/oep/gpt020},
volume = {65},
year = {2013}
}