If you think stability has returned to the oil market, two Rice University researchers have a message that should slosh your coffee: The crisis isn't over.The latest oil-price gyration, say Mahmoud A. El-Gamal and Amy Myers Jaffe, was part of a lingering triangle of forces that have shaken economies in the past.El-Gamal, chair of the Rice economics department, and Jaffe, director of the Energy Forum of the James A. Baker III Institute for Public Policy at Rice, treat the subject in a new book from Cambridge University Press: Oil, Dollars, Debt, and Crises. They discussed their thesis recently at the Baker Institute.Two of the three forces they identify have received new attention lately: ...