@article{02125663,
title = {Functorial concepts of complexity for finite automata.},
journal = {Theory and Applications of Categories [electronic only]},
volume = {12},
year = {2004},
pages = {164-168},
zbl = {1062.18001},
language = {en},
url = {http://dml.mathdoc.fr/item/02125663}
}
Lawvere, F.William. Functorial concepts of complexity for finite automata.. Theory and Applications of Categories [electronic only], Tome 12 (2004) pp. 164-168. http://gdmltest.u-ga.fr/item/02125663/