?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=C&rft.au=O'Rourke%2C+C&rft.aulast=O'Rourke&rft.issn=1089-7690&rft.title=Journal+of+Chemical+Physics&rft.issue=10&rft.date=14+September+2015&rft.atitle=Linear+scaling+density+matrix+real+time+TDDFT%3A+Propagator+unitarity+and+matrix+truncation&rft.volume=143&rft.genre=article