TY  - JOUR
AU  - D.A. Jackson
TI  - On the invariance of small overlap hypotheses.
JO  - Semigroup forum
PY  - 1991
SP  - 299
EP  - 304
VL  - 43
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1991__43_3_135117/
ID  - SF_1991__43_3_135117
ER  -