Arthur Gill. Cascaded Finite-State Machines. IEEE Transactions on Computers, 10(3):366-370, 1961. [doi]
@article{Gill61a, title = {Cascaded Finite-State Machines}, author = {Arthur Gill}, year = {1961}, doi = {10.1109/TEC.1961.5219223}, url = {http://dx.doi.org/10.1109/TEC.1961.5219223}, researchr = {https://researchr.org/publication/Gill61a}, cites = {0}, citedby = {0}, journal = {IEEE Transactions on Computers}, volume = {10}, number = {3}, pages = {366-370}, }