?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.proeng.2014.07.023&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Malakahmad%2C+A.&rft.aulast=Malakahmad&rft.aufirst=A.&rft.title=Solid+waste+collection+routes+optimization+via+GIS+techniques+in+Ipoh+city%2C+Malaysia&rft.date=2014&rft.issn=18777058&rft.genre=proceeding