... practices in the gold mining industry, The Journal of Finance, 51 (4), pp. 109 7-1137. Zang, P.G., 1995, Barings Bankruptcy and Financial Derivatives, Singapore: World Scientific Publishing. ... Risk Management in Environment, Production and Economy 214 Samuelson, P.A., 1965, Proof that properly anticipated prices fluctuate randomly, Industrial Management Review,6, ... 125-141. Gallant, A.R. and G. McCulloch, 2 010, Simulated Score methods and Indirect Inference for Continuous-time Models, in Y. AïT-Sahalia and L.P. Hansen, eds. Handbook of Financial Econometrics,...