Piet M.T. Broersen received the Ph.D. degree in 1976, from the Delft University of Technology in the Netherlands. He is currently with the Department of Multi-scale Physics at TU Delft. His main research interest is in automatic identification on statistical grounds. He has developed a practical solution for the spectral and autocorrelation analysis of stochastic data by the automatic selection of a suitable order and type for a time series model of the data.