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Identifying Nonlinear Components by Random Fields in the US GNP Growth. Implications for the Shape of the Business Cycle
Dahl, Christian M., (2003)
Semiparametric ARCH Models.
Engle, Robert F, (1991)
Forecasting volatility: A reality check based on option pricing, utility function, value-at-risk, and predictive likelihood
Gonzalez-Rivera, Gloria, (2004)