?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Kraskov%2C+A&rft.aufirst=A&rft.aulast=Kraskov&rft.atitle=Comment+on+%22Linguistic+analysis+of+the+human+heartbeat+using+frequency+and+rank+order+statistics%22&rft.title=PHYS+REV+LETT&rft.issue=10&rft.volume=92&rft.date=12+March+2004&rft.issn=0031-9007&rft.genre=article