Almost A ( m o d β ) - invariant subspaces
Analyse des systèmes, Astérisque no. 75-76  (1980), p. 239-248
@incollection{AST_1980__75-76__239_0,
     author = {Willems, Jan C.},
     title = {Almost $A(mod \beta)-$ invariant subspaces},
     booktitle = {Analyse des syst\`emes},
     author = {Collectif},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {75-76},
     year = {1980},
     pages = {239-248},
     zbl = {0459.93029},
     mrnumber = {581719},
     language = {en},
     url = {http://www.numdam.org/item/AST_1980__75-76__239_0}
}
Willems, Jan C. Almost $A(mod \beta)-$ invariant subspaces, in Analyse des systèmes, Astérisque, no. 75-76 (1980), pp. 239-248. http://www.numdam.org/item/AST_1980__75-76__239_0/

[1] W. M. Wonham.- Linear multivariable control : A geometric approach, Second Edition, Springer-Verlag (1979). | MR 569358

[2] J. C. Willems.- Almost A ( m o d β ) - invariant subspaces : an approach to high-gain feedback design. Submitted to the IEEE Transactions on Automatic Control. | Zbl 0463.93020

[3] J. C. Willems. - Topological classification and structural stability of linear systems, Journal of Differential Equations, Vol. 35 (1980). | Article | MR 563384 | Zbl 0394.93024