@inproceedings{inproceedings1ffbd56d,
title   = {The product of rational languages},
author = {Simon, Imre},
year = {1993},
doi = {10.1007/3-540-56939-1_92},
publisher = {Springer},
booktitle   = {International Colloquium on Automata, Languages, and Programming - ICALP}
}