Jeffrey S. Fenton. Memoryless Subsystems. Comput. J., 17(2):143-147, 1974. [doi]
@article{Fenton74, title = {Memoryless Subsystems}, author = {Jeffrey S. Fenton}, year = {1974}, doi = {10.1093/comjnl/17.2.143}, url = {http://dx.doi.org/10.1093/comjnl/17.2.143}, researchr = {https://researchr.org/publication/Fenton74}, cites = {0}, citedby = {0}, journal = {Comput. J.}, volume = {17}, number = {2}, pages = {143-147}, }