?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Bui%2C+Quoc+Trung&rft.aulast=Bui&rft.aufirst=Quoc+Trung&rft.issue=1&rft.volume=74&rft.date=May+2019&rft.issn=0925-5001&rft.atitle=On+three+soft+rectangle+packing+problems+with+guillotine+constraints&rft.title=Journal+of+global+optimization&rft.pages=45-62&rft.genre=article