?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevLett.98.208701&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Gabrielli&rft.au=Gabrielli%2C+Andrea&rft.aufirst=Andrea&rft.date=May+2007&rft.issue=20&rft.volume=98&rft.title=Physical+Review+Letters&rft.atitle=Invasion+percolation+and+critical+transient+in+the+Barab%C3%A1si+Model+of+human+dynamics&rft.issn=0031-9007&rft.genre=article