?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Pham%2C+Tien+Dat&rft.aulast=Pham&rft.aufirst=Tien+Dat&rft.date=7+September+2018&rft.title=Free+vibration+analysis+of+functionally+graded+shells+using+an+edge-based+smoothed+finite+element+method&rft.genre=proceeding