?url_ver=Z39.88-2004&rft_id=doi%3A10.1080%2F17499518.2015.1041989&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Liu%2C+Zhongqiang&rft.aulast=Liu&rft.aufirst=Zhongqiang&rft.issue=2&rft.volume=9&rft.date=June+2015&rft.issn=1749-9518&rft.atitle=A+three-level+framework+for+multi-risk+assessment&rft.title=Georisk%3A+Assessment+and+Management+of+Risk+for+Engineered+Systems+and+Geohazards&rft.pages=59-74&rft.genre=article