1. Aoki M. (1987), State Space Modeling of Time Series, Heidelberg-New York, Springer-Verlag
2. Aoki M. (1989a): Singular Values, Canonical Correlation and the Dimension of State Space Models of Time Series, presented at the 1989 NSF/NBER Seminar, Madrid
3. Aoki M. (1989b): A Two-step State Space Time Series Modeling Method, “Computer Mathematics Applications”, 17(8/9), 1165–1176
4. Aoki M. (1990), State Space Modeling of Time Series, 2nd revised and enlarged edition, Heidelberg-New York, Springer-Verlag
5. Aoki M. and R. Fiorito (1993), Analysis of US Real GNP and Unemployment Interactions: State Space Approach, “Journal of Economic Dynamics and Control”, 17, 385–399