?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M.&rft.aulast=Ahmad&rft.au=Ahmad%2C+M.&rft.pages=3975-3983&rft.atitle=VARIOUS+TECHNIQUES+TO+EVALUATE+CARBONACEOUS+SOURCE+ROCKS+AS+AN+UNCONVENTIONAL+GAS+RESERVOIR&rft.volume=14&rft.issn=18196608&rft.issue=23&rft.date=2019&rft.title=ARPN+Journal+of+Engineering+and+Applied+Sciences&rft.genre=article