?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Ha%2C+Quang+Minh&rft.aulast=Ha&rft.aufirst=Quang+Minh&rft.date=2019&rft.atitle=A+hybrid+genetic+algorithm+for+the+traveling+salesman+problem+with+drone&rft.title=Journal+of+Heuristics&rft.genre=article