1. M. Hazewinkel, R. E. Kalman,Mobuli and Canonical Forms for Linear Dynamical Systems (to appear; a Preliminary Version of this is available as report 7504, Econometric Inst., Erasmus University, Rotterdam, 1975).
2. M. Hazewinkel, R. E. Kalman, On Invariants, Canonical Forms and Moduli for Linear, Constant, Finite Dimensional, Dynamical Systems, In: Proc. CNR-CISM symposium on “Algebraic System Theory”, Udine, 1975,Lect. Notes Economics Math. Syst. Theory 131, 48–60, Springer-Verlag, Berlin, Heidelberg, New York, 1976.
3. R. E. Kalman, P. L. Falb, M. A. Arbib,Topics in Mathematical Systems Theory, McGraw-Hill, New York, 1969.
4. N. E. Steenrod,The Topology of Fibre Bundles, Princeton Univ. Press, Princeton, N.J., 1951.
5. M. Hazewinkel,Moduli and canonical Forms for Linear Dynamical Systems III: The algebraicgeometic case. (To appear. Proc. Inst./Sem. on Diff. Geometry for Control Engineers. Ames Research Centre (NASA), June/July 1976; a preliminary version is available as report 7610, Econometric Inst., Erasmus Univ. Rotterdam), to be published: Math. Sci. Press.