case study solution latter provides that case study answer parties shall meet and, in case consensus is reached, introduce such amendments or changes into case study solution Contract, that are necessary to restore case study solution financial interest of case study answer events to their status as of case study answer moment of signing case study solution Contract Barrows, Russia and NIS, Suppl 25, 1 1997. ” OPEC Resolution XVI. 90 of 2425 June 1968, cited in n 12, adds as follows in case study solution part dealing with Participation: Where provision for Governmental participation in case study solution possession of case study answer concession conserving company under any of case study answer present petroleum contracts has not been made, case study answer Government may acquire an affordable participation, on case study answer grounds of case study solution precept of altering cases. If such provision has in fact been made but prevented by case study solution operators concerned, case study answer rate offered for shall serve at the least basis for case study solution participation to be obtained. OPEC policy concerning participation has produced, as most giant result, case study solution acquisition by some Member Governments of 25% participation in current concessions and case study solution oil agencies undertaking to allow, within ten years, for case study answer acquisition of up to 51% participation General Agreement on Participation, signed in New York on 20 December 1972. ” ILM, 1981, 230 at 232.