@article{urn:eudml:doc:39962,
title = {A precedence theorem for semigroups.},
journal = {Collectanea Mathematica},
volume = {46},
year = {1995},
pages = {77-81},
zbl = {0856.20039},
mrnumber = {MR1366130},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39962}
}
Grillet, Pierre Antoine. A precedence theorem for semigroups.. Collectanea Mathematica, Tome 46 (1995) pp. 77-81. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39962/