?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Priestley%2C+M.+B.&rft.aulast=Priestley&rft.aufirst=M.+B.&rft.issue=1&rft.volume=31&rft.date=1969&rft.issn=0035-9246&rft.atitle=A+Test+for+Non-Stationarity+of+Time-Series&rft.title=Journal+of+the+Royal+Statistical+Society.+Series+B+(Methodological)&rft.pages=140-149&rft.genre=article