Stephen J. Hegner. Duality Theory for Discrete-Time Linear Systems. J. Comput. Syst. Sci., 17(1):116-143, 1978.
@article{Hegner78, title = {Duality Theory for Discrete-Time Linear Systems}, author = {Stephen J. Hegner}, year = {1978}, researchr = {https://researchr.org/publication/Hegner78}, cites = {0}, citedby = {0}, journal = {J. Comput. Syst. Sci.}, volume = {17}, number = {1}, pages = {116-143}, }