... Reiersol (1945) and Geary (1949) See also Sargen (1958) For more recent literature, see, for example, Newey and Powell (2003) For formal econometric results, see White (2001) 34 For simplicity ... caused by movement in costs (which is in addition to any variation in prices explained by movements in the demand curve caused by the exogenous demand shifting variables X2 ) Standard errors and ... efficient frontier analysis (EFA), stochastic frontier analysis (SFA), and data envelopment analysis (DEA) 3.1 Accounting and Economic Revenue, Costs, and Profits 125 3.1 Accounting and Economic Revenue,...