?url_ver=Z39.88-2004&rft_id=10.1063%2F1.3592473&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=P.&rft.aulast=Vasant&rft.au=Vasant%2C+P.&rft.title=Solving+fuzzy+optimization+problem+using+hybrid+LS-SA-PS+method&rft.date=2011&rft.issn=0094243X&rft.isbn=9780735408937&rft.genre=proceeding