A. Gill. Realization of Input-Output Relations by Sequential Machines. Journal of the ACM, 13(1):33-42, 1966. [doi]
@article{Gill66:0, title = {Realization of Input-Output Relations by Sequential Machines}, author = {A. Gill}, year = {1966}, doi = {10.1145/321312.321316}, url = {http://doi.acm.org/10.1145/321312.321316}, researchr = {https://researchr.org/publication/Gill66%3A0}, cites = {0}, citedby = {0}, journal = {Journal of the ACM}, volume = {13}, number = {1}, pages = {33-42}, }