Peter Weiner, Edward J. Smith. On the Number of Distinct State Assignments for Synchronous Sequential Machines. IEEE Transactions on Computers, 16(2):220-221, 1967. [doi]
@article{WeinerS67,
title = {On the Number of Distinct State Assignments for Synchronous Sequential Machines},
author = {Peter Weiner and Edward J. Smith},
year = {1967},
doi = {10.1109/PGEC.1967.264577},
url = {http://dx.doi.org/10.1109/PGEC.1967.264577},
researchr = {https://researchr.org/publication/WeinerS67},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Computers},
volume = {16},
number = {2},
pages = {220-221},
}