?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Kitching&rft.au=Kitching%2C+TD&rft.aufirst=TD&rft.issue=6&rft.atitle=Unequal-time+correlators+for+cosmology&rft.date=15+March+2017&rft.issn=2470-0029&rft.title=Physical+Review+D&rft.volume=95&rft.genre=article