00271nam a2200109Ia 4500082001700000100001800017245006100035300001600096490001400112490003000126500000500156  aSA.36 H786b  aHooper, J. W.  aError of forecast for multivarite of regressian modelsb  app. 544-555  vOct. 1961  aEconometrica, v.29, no.4   a