The late Albert Rex Bergstrom was Emeritus Professor of Economics, a former Dean of the School of Social Studies and Pro Vice Chancellor at the University of Essex and a Fellow of the Econometric Society. He was one of the world's leading authorities on continuous time econometric modelling. Professor Bergstrom was formerly Professor of Econometrics at the University of Auckland, and Reader at the London School of Economics. His professional papers appeared in leading journals such as Econometrica and Econometric Theory. Professor Bergstrom's earlier books include The Construction and Use of E...