?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=S.K.&rft.au=Bhattacharya%2C+S.K.&rft.aulast=Bhattacharya&rft.date=2012&rft.isbn=9781618396594&rft.title=Hydrogen+imbalance+in+petroleum+source&rft.genre=proceeding