1. Algebra;Maclane,1967
2. The presentation of ideas in this general reference book is compatible with the approach we have used here. A second edition appeared in 1979
3. Rings, Modules, and Linear Algebra;Hartley,1974
4. Readers wishing to add further background to the concepts of Chapter 7 should find this a useful volume. 2. Set-Dynamical Systems
5. Towards an Abstract Internal Model Principle;Wonham;IEEE Transactions on Systems, Man, and Cybernetics,1976