?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=C.C.&rft.aulast=Iferobia&rft.au=Iferobia%2C+C.C.&rft.isbn=9781613997239&rft.title=Acoustic+data+driven+application+of+principal+component+multivariate+regression+analysis+in+the+development+of+unconfined+compressive+strength+prediction+models+for+shale+gas+reservoirs&rft.date=2020&rft.genre=proceeding