Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KUIPM_1981_a17, author = {E. L. Stolov}, title = {Semigroups of automata with a two-letter output alphabet}, journal = {Issledovaniya po Prikladnoi Matematike i Informatike}, pages = {119--124}, publisher = {mathdoc}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUIPM_1981_a17/} }
E. L. Stolov. Semigroups of automata with a two-letter output alphabet. Issledovaniya po Prikladnoi Matematike i Informatike, Issledovaniya po Prikladnoi Matematike (1981), pp. 119-124. http://geodesic.mathdoc.fr/item/KUIPM_1981_a17/