“…PSAs would require a higher degree of information disclosure from the Russian majors and thus reduce their control over flows of revenue and information-control that currently benefits from institutional opacity (Locatelli, 2006) and amortisation practices in the Russian oil industry (Kryukov and Moe, 2007). Where PSAs would create ''fixed'' reference points for calculation of tax, investment procedures, use of underground resources, costs and taxation for foreign investors, this may not necessarily be welcomed by the Russian majors (Konoplyanik, 2003).…”