BibTex format
@techreport{Green:2015,
author = {Green, RJ and Staffell, I},
booktitle = {Evidence on Wind Farm Performance Decline in the UK},
title = {Evidence on Wind Farm Performance Decline in the UK},
url = {http://data.parliament.uk/writtenevidence/committeeevidence.svc/evidencedocument/science-and-technology-lords-committee/the-resilience-of-electricity-infrastructure/written/17905.pdf},
year = {2015}
}