?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Vu%2C+Thi+Hong+Nhan&rft.aulast=Vu&rft.aufirst=Thi+Hong+Nhan&rft.date=October+2010&rft.atitle=Online+Discovery+of+Heart+Rate+Variablity+Patterns+in+Mobile+Healthcare+Services&rft.title=Journal+of+Systems+and+Software&rft.genre=article