I: Methodology -- The Scientific Work of Gerhard Tintner -- Econometrics Needs a History: Two Cases of Conspicuous Neglect -- II: Planning Models -- Energy Pricing in a Welfare Framework: Issues in Equity, Efficiency and Exhaustibility -- Foreign Aid, Economic Development and Income Distribution: Some Inferences from a CGE Model for Egypt -- III: Analysis of Efficiency -- The Active Approach of Stochastic Optimization with New Applications -- Efficient Portfolios: Risk Shares and Monetary Policy -- Extremal Principle Solutions of Games in Characteristic Function Form: Core, Chebychev and Shapley Value Generalizations -- Econometric Estimation of Decision Models under Uncertainty -- On Estimating the Elasticity of Factor Substitution by Nonlinear Least Squares -- Recent Nonparametric Measures of Productive Efficiency.