?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Sun&rft.au=Sun%2C+K&rft.aufirst=K&rft.issn=0169-2046&rft.date=September+2019&rft.pages=139-155&rft.title=Landscape+and+Urban+Planning&rft.volume=189&rft.atitle=Classification+of+soundscapes+of+urban+public+open+spaces&rft.genre=article