@article{GDZPPN001250736,
title = {Sch\"utzenberger groups of some irregular ...-classes.},
journal = {Semigroup forum},
volume = {11},
year = {1975},
pages = {283-314},
zbl = {0305.54042},
url = {http://dml.mathdoc.fr/item/GDZPPN001250736}
}
Subbiah, S.; Magill, K.D. Schützenberger groups of some irregular ...-classes.. Semigroup forum, Tome 11 (1975) pp. 283-314. http://gdmltest.u-ga.fr/item/GDZPPN001250736/