TY  - JOUR
AU  - C.M. Campbell
AU  - E.F. Robertson
AU  - R.M. Thomas
TI  - On a class of semigroups with symmetric presentations.
JO  - Semigroup forum
PY  - 1993
SP  - 286
EP  - 306
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1993__46_1_135237/
ID  - SF_1993__46_1_135237
ER  -