1. Estimation of the order of linear systems;Woodside,1970
2. Lectures on the identification problem—the least squares method;Åström,1968
3. Maximum likelihood identification of the Ågesta reactor and comparison with the results of spectral analysis;Gustavsson,1969
4. On estimating the orders of an autoregressive moving-average process with uncertain observations;Chow;IEEE Trans. Aut. Control,1972
5. The determination of the order of linear systems;van der Sommen,1971