@article{DBLP:journals/iandc/Gordon79,
author = {Henry G. Gordon},
title = {An Isomorphism of Complete Degrees of Finite-State Transformability},
journal = {Information and Control},
volume = {40},
number = {2},
year = {1979},
pages = {192-204},
ee = {http://dx.doi.org/10.1016/S0019-9958(79)90386-3},
bibsource = {DBLP, http://dblp.uni-trier.de}
}