no. 2
Crossability of cancellative Kleene semigroups
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 26 (1992) no. 2, pp. 151-161. 
@article{ITA_1992__26_2_151_0,
     author = {Rupert, C. P.},
     title = {Crossability of cancellative {Kleene} semigroups},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {151--161},
     publisher = {EDP-Sciences},
     volume = {26},
     number = {2},
     year = {1992},
     mrnumber = {1166785},
     zbl = {0751.20052},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1992__26_2_151_0/}
}
TY  - JOUR
AU  - Rupert, C. P.
TI  - Crossability of cancellative Kleene semigroups
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1992
SP  - 151
EP  - 161
VL  - 26
IS  - 2
PB  - EDP-Sciences
UR  - http://archive.numdam.org/item/ITA_1992__26_2_151_0/
LA  - en
ID  - ITA_1992__26_2_151_0
ER  - 
%0 Journal Article
%A Rupert, C. P.
%T Crossability of cancellative Kleene semigroups
%J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
%D 1992
%P 151-161
%V 26
%N 2
%I EDP-Sciences
%U http://archive.numdam.org/item/ITA_1992__26_2_151_0/
%G en
%F ITA_1992__26_2_151_0
Rupert, C. P. Crossability of cancellative Kleene semigroups. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 26 (1992) no. 2, pp. 151-161. http://archive.numdam.org/item/ITA_1992__26_2_151_0/

1. S. Eilenberg, Automata, Languages, and Machines: Volume A, Academic Press, 1974. | MR | Zbl

2. J. H. Johnson, DO Rational Equivalence Relations have Regular Cross-Sections? Proc. 12th Internat. Conf. on Automata, Languages, and Programrning, Lecture Notes in Comput. Sci., 1985, 194, Springer-Verlag, pp. 300-309. | MR | Zbl

3. M. Pelletier, Descriptions de Semigroupes par Automates, Thèse de Doctorat, Université Paris-VI, 1989.

4. C. Rupert, Equidivisible Kleene Monoids and the Elgot-Mezei Theorem, Semigroup Forum, 1990, 40, pp. 129-141. | MR | Zbl

5. J. Sakarovitch, Deux Remarques sur un Théorème de S. Eilenberg, R.A.I.R.O. Inform. Théor, Appl., 1983, 17, pp. 23-48. | Numdam | MR | Zbl